Not sure if most of the people responding against triples can relate, but a 30 x 26 is a welcome gear after 100+ miles.

Every time I think about getting a double, I end up out on a ride standing on my granny gear going up a wall somewhere. That extra quarter pound isn't making any difference, but having another gear is.

As far as shifting issues, I don't have any but maybe that's because it's a campy triple.