I bought 2 Aimtrak complete guns a few weeks back and I've had a great time with them so far. Light gun games seem to be
exponentially more fun with 2 players... but I think the first question is: do you LOVE light gun games?
If you can list off, let's say ... at least 8 to 10 light gun games (off the top of your head) that you really love to play, or wish you could play "properly" ... then yeah, you're probably going to enjoy having one around, even if you don't use it every time you have a gaming session.
I will say this:
if you're using a CRT monitor, try not to get an Aimtrak or any other such "sensor-bar" based gun. Stick to the old school light guns (Act-Labs, etc.) The required distance from the screen with sensor-bar guns is my biggest complaint. It's not a deal-breaker (especially since I only have access to LCD screens nowadays) but deep down, I miss being able to "cheat" by getting right up to the screen!
