I have a 2009 Aspen PFD1000. It works fine but I'm considering the $2995.00 upgrade to the Evolution 1000 PRO MAX PFD https://aspenavionics.com/products/general-aviation/efd-1000-pro-max Two reasons: Back up AHRS if the pitot static fails, I hate that my current unit will red X if the pitot static fails, I fly a lot of IFR. (I do have a Stratus 3 I have on the dash for AHRS and ADSB in) It's 10 years old and maybe an update is a good idea. They rebuild my unit with new display and guts. I need a new $155.00 back up battery anyway...new one has a new battery. My panel is old as well, Garmin 480 GPS, GMX200 map. ADSB out. Century 2000 Auto pilot. Replaced panel about 2009 that is nice. Money is an issue and I don't want to go crazy. All is working fine now.