Hello. I'm a bit torn in what to actually do as $ is an issue. 1stly, is anyone here running a gtn 650 with an efis setup? If so I'd like to chat with you. I'm about to pull and old kln89b and have installed a gtn650. I'd also be replacing my bk 155 with 209 cdi for a garmin 106 cdi. also need to upgrade my TT a/p with a vizion 385. I get the "why not just go with an efis and it's not much more". I don't have "that much more". I'm just needing to get by and the 650 would be a huge step to that future (if ever happens) efis upgrade. I need to start my ifr training as the written is out of the way. So no time to save up to upgrade. I want a certified nav source. The 650 will be a tight fit so the 750 is outta the question. Anyone out there? THx, DM