Decide what the primary use is and how much you want to spend. Any GPS will tell you where you are.
I've looked at the Fly-Angel and thought it was a bit small and fiiddly to use.
I've been using a Garmin 296 with automotive kit and City Select - Europe software, and find it pretty good generally. Post-code searches are not very good however.
The new 496 comes with automotive kit built in.
Updates are about £20 for the aeronautical database, a bit more (but not needed so often) for the automotive database.
Car portable units are getting so cheap now, it might be just as cheap to have separate dedicated units.