I decided to select Garmin products for this build mainly for resale purposes. I used Dynon in the 2 VFR SeaReys I built and loved their product also. The installation of the dynon products were easier than Garmin, but now that I have been through the installation process, the next Garmin build would be much easier. I have dual touch G3X's, a G5 back-up, and a Garmin 430W to make the GPS navigation IFR legal. I know the G430W is no longer in production but they are plentiful and relatively cheap. I only need it as a back-up radio and for IFR operations which will be minimal. I have a Garmin GTR20 remote com and a GTX 45R remote transponder. There is a 2 axis Garmin GMC507 auto pilot with a separate yaw damper system installed. Near the top of the panel is a GMA245 audio panel. I made all the panel cut outs myself and also designed/built the radio racks too. . I took advantage of the unused space near the firewall and installed most of my avionics equipment there including a GDL52R sirius XM reciever, GEA 24 EIS, GSU 25, and a GAD 29 Initially I cut out 2 access panels in the upper fuselage area to make it easier to get to the avionics, however after completing the process I decided to add riv nuts to the entire panel instead of riveting it permanently. This way if I ever need to do serious work behind the panel, it should be very easy to get to the equipment. There is a battery backup for the entire avionics system and an addition G5 battery backup also. A TOGA button is placed just in front of the "full throttle" position within easy reach for both take-off and go-arounds.