I would say .info, since it suits more sites and .biz(ness) is inferior compared to .com(ercial)--it has the biggest competition here with the "king".
Just IMO.
I would say .info. Although .info was free earlier, it has picked up well as compared to .biz. .biz has never really been popular although its an extension meant for businesses around the world.
.info has global appeal I think. I've recently regd a few music related infos. I think info will exerience a big increase in popularity in the next few years.
Yup gotta agree with most here, definitely info. Got more credibility to it I'd say. .biz, imo, and only imo, sounds nasty and cheap, I really don't like it! But that's just me, and I am but a tiny fish in a very big pond...