I don't think I'll be getting either, at least, not at full price. I'm not all that into shooters so I don't really need to own all of the ones that are released. If I do get one of these two, it'd probably just be to play them with people here. And in that case, I hope it's Goldeneye, because Call of Duty is a bit plain.
I wouldn't expect Call of Duty Black Ops to have WiiSpeak support, and probably not local multiplayer. None of the other Wii versions of Call of Duty have these features, not even Modern Warfare, a port they spent ten months on. They're certainly not going to appear in a game that's releasing simultaneously on all major platforms.
Local multiplayer has already been confirmed for Goldeneye. I don't think anything has yet been mentioned about WiiSpeak, but I wouldn't count on it. Especially with The Conduit 2 being delayed, they won't care to match its feature set.
I'd hope for USB keyboard support, but I know it'll never happen.