Three-part question/discussion: 1) I am shopping GTN750xi; there seem to be about a $7000 savings new vs. used. I had no idea they had been out that long. Never purchased used. 2) Anyone made the switch from JPI to Garmin TXi EIS? 3) My first avionics upgrade post-pandemic - I used to figure labor by doubling the avionics' purchase price. (Garmin cost $10,000 which would equal installation labor costing $10,000) Then just be ecstatic when it would come in under; making sure to mention it to my wife we save money.