I counted it up from memory. Since 2010, I think no less than (16) CFI's have put an entry in my logbook. Why so many? Three were from the club, two checkouts are required and I flew with a third to work on my landings before being signed off. Two were straight airplane checkout rides for rental. Two were subs when a regular CFI had to cancel. That covers (7) of them. Of the other (9)
The BFR guy - mediocre
The complex guy - mediocre
The CTLS guy - very good
The Luscombe tw guy - excellent
Another club "guru" that I paid to fly with me to give me some pointers but had nothing of value to offer. I think he was confused as to what an inctructors job is. It is to INSTRUCT. He was a retired airline guy and fresh CFI and a sweet guy so I forgive him that.
That leaves (4) that, in addition to the first BFR guy, I used for my IR. Of those, three did not work out for various reasons, one I could not stand, and the last is the one I plan on finishing my IR with and maybe my Comm, also.
Personally, I think a number of them were "bad" for various reasons, not the least of which was being mediocre.
That's got me thinking of my own list...minus the few I had for stage checks during the PPASEL training, a few rental checkout instructors, and CFIs who let me fly their planes.
I wish I knew more about many of them, what experience they had at the time, and where they ended up. But here are my impressions:
#1: For my intro, which took place a couple years before I really got started (in my mid-30s), and at a different school. About my age, affable and good at selling the product, but also keen on teaching. No idea how well he flies because he let me fly pretty much the whole thing.
#2: Pretty green, younger than me, very professional and well-prepared, good stick and very hip to the regs and theory. He wanted to go fly floats in the Caribbean, and I hope he did. Handled the airplane well.
#3: Another younger guy... impish, casual, a real "natural" pilot... I always picture him showing me how to fly the plane with the door open and one foot on the footrest on the main gear (seatbelt secure, of course). He was the first CFI who I saw "teaching without teaching"... keeping it fun and absorbing, and encouraging me to learn by doing.
#4: Another one younger than me, a serious instructor but more of a "company man". He talked me into moving into a 172 from a 150 to save money, which I agree, looking back, was illogical.
#5: Closer to my age, and probably my favorite PPASEL instructor overall. He also turned wrenches for the school, so it was comforting to have him along.
He was very soft-spoken and annoyingly calm, knew the material and the airplanes backwards and forwards, had good weather sense, and was a good stick. He turned me loose for my first solo, after very carefully making sure I was prepared. His dream was to do bush flying overseas for missionary groups, and I think he'd be perfect for that job.
#6: More hours with this young man than the others; I grew fond of him, but he was the nervous type. Always on the controls, or touching radios, etc just as I was about to, etc., etc. But again, he appreciated the gravity of what he was doing, and knew his stuff. He flew well, but planned to go into maintenance to earn more money.
#7: Gotta include the first DPE: first guy older than me, bizjet mfr. check airman... pretty aloof, to say the least. He turned out OK for my first check ride, but let's say I would have probably hated doing primary training with him. But when he took over the 172 to land back at home base, it was beautiful to behold. Flying jets had not spoiled his basic skills at all, and damned if I didn't think about that landing during every approach for months afterwards.
#8: First flight review was also a rental checkout, after not flying for 5 months. Different school, too. The CFI was a master at this, and got me through it feeling I got my money's worth.
#9: Won 30 minutes of aerobatics dual in an airshow raffle, and not surprisingly, the master aerobatic pilot was also a great teacher. I wound up paying for a second half-hour. He'd demo a maneuver, then let me try one. He explained what went wrong or right, then we'd do it again. Also tried very hard to give me a feel for what I could do in an upset situation in a 172 or whatever.
#10:Another rental checkout, after landing long because my pax was puking (not my fault!)... he was on my side, and gave me good advice for shorter fields like N07: never make a normal takeoff or landing.
#11: Club checkout: another experienced instructor, and under no corporate pressure.
#12: Took some dual at yet another airport in the middle of a 4-year hiatus...let them know I probably wouldn't be back anytime soon (money). Another very young CFI, and he took the opportunity to carefully observe and learn about what happens to a pilot in this condition.
#13: Second flight review, after that long hiatus... this guy was something. Very young but hardcore, with an overseas ATP and three huge binders of his own personal torture material. The oral and the two flights were grueling, and I can't thank him enough for that. He was hard on me, but at no time did I get the impression that he wanted to discourage me.
#14: Tailwheel add-on... 60-yr-old plane, 80-yr-old instructor. He'd been teaching in that airplane for over 40 years, and in his hands it flew like a beautiful bird, even though it's an underpowered tub of drag. He also kindly bundled a basic but complete flight review into our 10 hours together.
He is a grandmaster of "teaching without teaching"... sure, I knew enough about flying in general, so he didn't probe there much, but he also somehow taught me how to land that thing without me really noticing.
#15: Got into gliders with a very small club, and learned the ropes with a pilot who was already a friend; a guy who'd let me fly his RV (from the back) about 10 minutes after we first met. A great stick, irreverent, crude but effective at all times. Very passionate instructor.
The familiarity can interfere with the student/instructor connection, but he has spent many, many hours in the back of a 2-33 and is a walking encyclopedia of airman knowledge, so I learned.
#16: Glider DPE; did my PP-G and commercial with him. He's another one who seems to just be having fun talking about flying or flying with you, but leaves you thinking... which is what it's all about.
Looking back, my overall impression is that some of my most fondly-remembered flights were with good teachers.