Well, I bought the TE to play, and still play it 7 years later. I bought the GT broken from a friend of mine for parts in case my TE broke, but then fixed it and I use it for Japanese TE games.
I actually have five Game Gears, all picked up at yard sales and stuff because they were like $5 with games.
BTW, I only listed three. The PCE GT is the PC Engine GT, the Japanese version of the TurboExpress. Same unit, plays Japanese games instead and has Japanese lettering on it.