I bought it

I went with the 2007 because they didn't have any of the 2006 with 18" frame in stock. I like it a lot and I'm about to go out riding with a friend of mine for my first lengthy ride.

One thing I notice is that I get a little bit of noise in certain gear combinations. Is the chain generally supposed to be completely silent after it shifts? The noise doesn't sound real bad, but it sounds like some part of the chain might be touching something on the down stroke of the right crank when I'm in certain gears. Should I get it checked out immediately for that, or just avoid that gear until I take it in for my free tune up?