9sp Ultegra, especially 2nd gen shifters, last pretty crankset by Shimano.
9sp 105, especially 2nd Gen. w/black lettering. Great value.
9sp Tiagra, very durable, square taper crankset.

9sp Dura Ace is great, not always cheap, and the cranksets scuff quickly. Still the best 9sp ever made, IMO, and even better with DT shifters.

Another option is 10sp DA w/DT shifters, fill in the group with polished Shimano stuff from 105, Ultegra, and DA, use Tektro calipers to save $.