I'm building a 2012 Giant Defy Advanced frameset which takes a BB or PF 86 bottom bracket and i have a Sram Force 22 gxp crankset. I've googled a lot about bottom brackets and know a lot more now, but I'm not positive.

I would like to get a good long lasting part like ultegra level, no Chinese aftermarket and no ceramic at this time.

Do I have to stick with Sram or could I use an ultegra bottom bracket? Sram would be fine too if I knew which one to get. Maybe the bb86 gxp team with steel bearings? How many does Sram have to choose from? Thanks.