Originally Posted by
greyghost_6
To clarify, the bottom bracket is the bearing assembly that attaches to the inside or outside of the frame (yours is outside, so external). And the the crankset is the crankarms/chainrings, so they are 2 different things, just in that link you gave they grouped them together since they work as one system. You should be able to keep your bottom bracket since they standardized much of the external bottom bracket systems, and should be able to fit a shimano to the bike. But you could take the bike down to your LBS to see if your bottom bracket would fit a shimano crank.
Why do people reply without knowing what they're talking about? Your bottom bracket is a GXP, and so won't accept any Shimano cranks. To stick with the current bottom bracket then the only road triple crank other than the Elita that you have is the Truvativ Rouleur, but they are not easy to get hold of and are not so different from the Elita. It would therefore be best to change the bottom bracket as well as the crank. Shimano 105 or Ultegra would be the standard choice - not too heavy, good chainrings, stiff enough cranks. FSA are normally a bit cheaper but not as good as Shimano cranks IMO.