As far as Wii games go, your best bet would probably be Black Ops. Treyarch has done a great job with these Wii ports over the years, while HVS may or may not have a quality game in Conduit 2. Goldeneye doesnt seem to be all that great; it seems like Activition is mearly doing it to do it, there doesnt appear to be a whole lot of effort involved.
Conduit 2 may end up being the best or the worst of the bunch. It does look like it has a bunch of improvments, but if level design and crappy online play crapps it like it did the original, i wouldnt want to buy it.