yeah 42 might be a bit of a stretch. I'm probably going to go 35-38 (I put a different wheel in there with 32's and just saw lots of room and thought I'd take advantage of it, plus I have fenders that are going on that are massive - had a deal too good to turn down on 52 mm aluminum fenders even though they make small tires look silly). I would use the wheels I have, but I came across a nice dynamo hub and light on a great deal and figured I'd put them on the bike too, so see what I could come up with on my drop bar conversion.

I have heard good things about the pacenti tires, but those are a bit more than I'd want to spend.