Vents - fit looks good. If you're happy with the fit, I'd say keep them. They'll loosen up some but I dont think the fit will change that much.
I'll try and get some pics up of mine. Only worn for about 2 months but not much change in the actual fit. I was able to button them up easily with sizing down 2 also. Some people say they stretch out a lot and some say they don't. Guess it really does have to deal with how much you size down.