i have discs on all my bikes. (the nashbar carbon cyclo fork is a good way to get disc brakes on a road bike.)

for ease of use i prefer a good mechanical like the avid bb7. the brake is relatively light and is road bike compatible. the down side is that you have to adjust the calipers for pad wear. swapping out pads is a breeze though.

hydraulic disc brakes are where its at. they have incredible power, the pistons adjust automatically for pad wear, and they also have greater stopping power than a mechanical. i find replaceing disc brake pads to be far easier than replacing and adjusting pads on rim brakes. the only downside of hydraulic brakes is that they are somewhat of a pain to bleed. (i bleed mine every few years.)

i suspect in a few years all high end road bikes will have those fancy new hydraulics shimano has been working on.