TG-16s don't really have cap problems. It's always possible that yours could need 'em at some point, but it's not a ticking time bomb like with the Duos.
I have an Everdrive (I think it's a 2.3); and except for the SD card sticking out too far and getting hit by the RX's power switch, I like it quite a bit. They won't play CD games, though, as that's just not possible.