I know you asked Becky but I'll butt in anyway.
I run the 100/90-18 Avons on the front of my bike. They look a bit smallish under the stock TBA fender. Might try the 120 this year, even if I have to make some spacers for the front fender (I'll probably move up to a 180 on the rear, too).
My only complaint on the Avons is longevity. I only get 6000-6500 miles on a rear tire. I could probably get another 500-1000 on the front but I replace them both at the same time, usually in the Spring.
