I’ve flown both and liked them both. In fact, flown lost of different make/models over 30 years of flying and liked something about most planes I’ve flown. I would go with the advice many have shared to buy the plane in best condition and with the avionics you need.
I currently on a Mooney C. Owned it for 10 years and I wasn’t particularly looking for one but a good friend owned it and I would help him with the annuals and when he decided to get a twin I bought it from him. It’s just me and the wife so don’t need to carry adults in the back seat often but have on several occasions. Useful load is right at 1000 lbs. sweet spot for cruising is between 7000-10000 feet and my C will reliably do 145 Kts burning 9.2 GPH. I’ve flown as high as 16,500 but performance and speed drops off and not worth it unless you need to because of terrain or weather. It makes a nice instrument platform and maintenance has been fairly low. The Jonson bar landing gear requires lube every annual and a torque check which takes less than 15 minutes to do. Have never had to adjust anything. Annuals have been averaging around 2K. Insurance was 900 for 60k hull value but hear rates are going up so I’ll see what the new rate is in November when it’s due. I live in Florida and travel to Ohio and now Wisconsin to see my son and the Mooney handles that great. north Florida to Oxford Ohio nonstop right at 4 hours.