I saw at my Performance today that they had a set of Shimano Ultegra Octalink cranks at a really nice price and as I am in the market for a new crankset I thought about picking them up. I've searched the forums here and read some stuff about the Octalink, but I'm not really all square with what they are.
I know I'll need a new Octalink BB along with the cranks, but it there anything else I need to know? Is there anything special about them? The cranks physically looked/were shaped a little different from the other Ultegra and Dura-Ace cranks sitting around it, which threw me off a little bit. Is there a major difference in the Octalink or is the difference in appearance just an aesthetic difference?