I'm not sure how much the "feel" of the disk brakes changes with some riding and break in, but I rode a Cannondale synapse disk and I was not terribly impressed, the breaks were easier to modulate, less grabby than rim brakes, but overall it felt like it took more lever effort for a given amount of braking with the disks vs rim brakes.
Just my .02, but another guy somewhere in the forums rode the same exact bike at a different dealer and had a similar impression.
I do not do any descents where I NEED brakes, most of my very limited braking is slowing down for stop signs and stuff like that, I can almost go a whole 30 mile ride without using brakes at all some days.
Bill