Hey there.
I have a Shimano Ultegra compact crank (50/34) on my bike and a D/A 12-25 cassette on back, running a Shimano chain through it all. Front and rear derailleurs are Dura Ace.
I'm already pondering some other options for the rear - specifically, SRAM makes a 11-26 10-spd cassette which sounds appealing...Oomph for the flats, spin for the hills.
Question:
Are there any compatibility issues running a SRAM chain or cassette on Shimano other parts?
Can a D/A rear d. handle that kind of swing?
Thanks!