I have a SRAM FORCE 53/39 crankset and...
I have a SRAM FORCE 53/39 crankset and ultegra shifters,cassette and mech. I would like to ask first if the cn-6700 chain is compatible with the above setup and works smooth and second if a sram cassette with an sram chain it would work better?
SRAM and Shimano are compatible with each other. If you run Shimano shifters, the Shimano or SRAM drive train set-up will work. My personal preference is for Shimano, but either will work in either combination. The only thing to look out for is the hub-body. If you have a SRAM hub-body, just be wary the ridges on it are not too high. There are some SRAM hub-bodies that have higher ridges, so the Shimano cassette might not work.
If you have had a Shimano cassette on before, you can go with either the Shimano or SRAM option. You can also go with any of the 10-speed products from either company.
Hope that helps you