I normally use the Garmin 95, old reliable techniology, no moving map, just a few buttons needed for all information.
I don´t want to rely on the GPS. I did it one time, and it was close to be the last, because it suddenly displayed the ´battery low´ warning, although it was connected to external power (at least there was a wire, but unfortunately no connection...) and quit within minutes while I was flying under severe weather conditions somewhere in northern france far away from the next airport ....
I just use the GOTO-Option, type in airport codes or the code of an airport on the same track as my waypoint and just follow the arrow to keep on track.
For the exact position on the track I use the map and the cockpit window, so I always have a back-up.
For the descend to my destination airport I also use the ´time to waypoint´ displayed simultanous with the track and direction information. (altitude over pattern divided by time to destination = vertical speed to fly).
Any other options ´modern´ GPS do offer, just make you relying on them, I don´t want to rely on computer and software based systems ! (Bad experience with these outstanding Micro$oft operating Systems ....)
It always is a good joke to think of a ´general protection fault´ message on your GPS until it really happens and you are over unknown terrain.