N Gage

Do it! I dare you!

There is none

LOL at least buy the QD version if you don´t want to talk on the phone sideways!

Now srs: Atari Lynx, Neo Geo Pocket, Game Gear...

NeoGeo Pocket Color. Best handheld that wasn't made by Nintendo or Sony! I did enjoy a few games on the Wonderswan, but it really came down to a really cool golf game and Mr Driller. Everything else was pretty meh!

Lynx, Gamegear and Nomad were cool, but wow! Such great games and all with a lush sound chip. It's not a cheap system to get into though.

Avoid the Game.com at all costs! My god it's less poweful than the original gameboy despite having internet capabilities etc.

SEGA Nomad?

Ja.

Neo geo pocket color and a dreamcast.. You could link some SNK games back in the days.. Transfer earned points

Be aware that some Game Gears usually have faulty capacitors that affect the screen, as it becomes too dim to see anything. I have one and it´s capacitors need replacement :/

Also, the Game Gear and the Lynx are REALLY big portables.

This.

If you get a Game Gear, make sure you can test it first. Test the screen, speakers, and headphone jack. Very very VERY high failure rate. Finding one with an AC adapter is a plus too. You get about 4 hours of battery life out of 6 AA batteries.