I use edu ultra 100 and 400 in 120 size, and the curling is a real pain! I have to use little bits of tape to hold the film down long enough to get my contact printer assembled. I tried some tmax 100 in 120 size the other day, and after drying it was just as flat as you please. Wow, it's worth a couple of bucks to me just for that difference. Anyone else feel that way?