Should I get The Conduit or COD4 Reflex?

Well, this weekend I'm getting New Super Mario Bros Wii(YES!) and I want to get a FPS alongside it. But I don't know which to get. I need a good FPS Wii game, cause the only one I have is Onslaught(it's OK but I don't play it much.) The Conduit is cheaper and has 12 player matches, but it has a bunch of hackers on it(so I hear) and Wii Speak sucks on it. Reflex has more control customization and it more realistic, plus it seems like more people would play that than The Conduit, but it's more expensive and only 10 players, and it has no voice chat at all. I don't know which to get...