I have not used a TRX-2 but I really like my BCD536HP when I'm on the road. The GPS function works very well and makes traveling a lot of fun. It does everything automatically so I really don't need to look at the display while I'm driving.
Yes after the age of 40 your eyes go downhill real fast and I can't see things up close. Yes the 536HP shows more on the screen which is nice, but harder than on the eyes than the 996P2If you want to be able to see the display,go with the WHISTLER TRX-2,the faceplate has magnets,it can go anywhere really.Better receive sensitivity.
I find the 536HP lacking sensitivity in the 440 mhz ham band as well.
Very hard on the eyes,even after setting up the capital letters for all the lines,I still had a rough time with the 536HP,mine never went mobile but it didnt receive very well in my base with a giant antenna on my roof so I doubt the 536hP works any good in the mobile.
to me if youre going Uniden a 996P2 display is alot clearer and decode is the same as the 536hp for mobile and no SD card to corrupt.
Since this was the first thing on your list - in my opinion - it's a joke. The interface is pretty buggy and last I saw, if you want to have your radio at home and use it on the road, you'll have to do some magic to make it work and/or buy more software. And there is no way I'd mess around with that junk while driving - moving or stationary.1-Using a smart phone as a remote display using wifi dongle - I don't really have room for another radio display on my instrument panel