Weight is the main reason why I ride 23's. I built (and still building) a light/quick bike and there is nothing going on it that is heavier. It really is that simple.
I do not ride longer distances than 70mi and often do 60. Comfort isnt an issue.
Currently and on their last season of 3, Michelin Krylions have done the job. I chose them over the heavy 25's they replaced and have enjoyed them. This tire was tested to have a top 3 rating in rolling resistance.