My best friend slings ink for a living and we see some really obscure stuff. A full back piece is going to cost you a couple thousand bucks. Now, if you're really dead set on this I would agree with most of the people here and get the meteor. It's well known enough in the gaming community so gamers will know what it is. And it looks cool to the point where a non-gamer won't think dweeb and think it's just another one of those cool designs people get. And keep it small....

My 2 cents...