Just my 2 cents
I have the Act Labs VGA USB Light Gun and other then having to calibrate it every time I change games It kicks alot of ass ... just cant use it on your tv which sucks but I can live with that

I also picked upi Digital Leisures 3 Action Shooter Pack from EB Games here in Regina for $5 Canadian

SWEET DEAL I KNOW ... came with great LaserActive Games like Crime Patrol, Drug Wars and Who shot Johny Rock

also picked up House of the Dead 2 and Area 51 for the PC ...
all of those games works great with it after you calibrate the gun for the screen wich only takes like 5 seconds

they are worth it ... But personally I think they are too light for my tastes