[quote name='lilboo']In all honesty; both.
See, in order to say which is better you HAVE to ask for a certain game.
I like my zapper with Ghost Squad, but I like the Perfect Shot for House of the Dead 2. Note, I said HotD 2. In HotD 3 you use shotguns, and I like the zapper for that. I haven't tried Link's Crossbow training with the PS yet.. or RE: UC so I can't say.
But what I CAN say is that they compliment each other very well. I would recommend you getting both. This way you have options AND you have a spare gun for someone else to play.
Zapper w/ Crossbow Training is VERY much worth $20.
Right now, you can buy the Perfect Shot with Ghost Squad OR HotD Returns and save $10..aka get the gun + a game for $35.
Hope this helped somewhat.[/quote]
I agree with everything liboo says, ever. Partially because it's true, but partially because I like to stroke his ego.
Link's Crossbow training is fantastic for $20 and the Zapper, and definitely plays better with the Zapper.