I'm not a big talker (unless you hit on something I'm really interested in, then I get much more verbose). So I prefer a girl to be at least mildly talkative - I don't want to feel like I have to keep her entertained constantly. Besides, when I'm tired of listening to her I can just stick my cock in her mouth.
Um, if by talking you mean bitching at me to wash my dinner plates, stop playing Halo on my X-Box, or take her friggin dog for a walk in the rain than I would say I prefer the silent type. On the other hand if by talking you mean her putting on her sultriest, sexiest, Demi Moore from St. Elmo's Fire voice and telling me naughty things to do to her while her girlfriend watches, well then I guess I would prefer a talker.