I've got an old hardtail mountain bike that I use for commuting. I've got a Xtracycle on order, which I'll be installing soon.

I've been running 1.5" Nimbus Armadillos for the last year or so, but I got a flat in back the other day (construction staple), and when I pulled off the wheel, I noticed that the tread was missing in a couple of spots. My LBS was out of the Armadillos, so I decided to order on line.

Did some research on bike forums, and decided to go with the Big Apple instead. But I can't figure out whether to get the 2.0" or the 2.3". Any advice or experience one way or the other?