I'm also new to winter hiking in the Whites, and here is what I roll in...
I picked up some Cassin crampons from Sierra Trading Post for $39 this past Autumn. I wear them with Koflach Degrees, which I got from Hilton's in Boston for $200 last St. Pattie's Day after having a few drinks. (Some people get tattoes, I buy gear!)
I spent some time dremmel-ing the Koflach/Vibram sole to make sure the crampons fit snug and won't torque off. I also spent some time this Autumn in the park "airating" the grass with my boots and crampons, getting used to them.
All the crampons I've seen look good, but it seems like it really depends on the boot/crampon fit.