Rcmutz
Cleared for Takeoff
We wanted to make sure that whatever we chose worked with as many pilots' setups as possible. Garmin gear only talks to Garmin Pilot and ForeFlight. Stratus only talks to ForeFlight, period. We had pretty much narrowed it down to the Stratus ESi, Garmin 335 (with Stratus or GDL39/3D), or Garmin 345.
It turned out that in spite of the high percentage of ForeFlight users, we decided to go with the GTX 345 (which works with both ForeFlight and Garmin Pilot). Some of the discounts we were able to get put the price difference between it and the others at around $1100, so it just made more sense to go with the panel-mount in/out solution, which we'll hook to the GNS 430W and possibly even a FlightStream 210 for flight plan transfer.
Wow! That is pretty much what I have been thinking as I have the same equipment. Just can't convince myself to pull the trigger for $4000 worth of equipment when I have a working transponder, and use Stratus for In. Thinking I will wait to see what comes out in 2018 that will make use of my existing transponder, keeping my Stratus for in.