Ok...long story...keep it short as I can...I have a CAAD10 w/SRAM Force BB30 compact crank. Want to try Rotor Q-Rings but they only make one outer ring that's compatible with my crank. It's a 50t and is not 5 position adjustable like their regular Road & Aero rings. I had wanted to run their 52/36 Aero rings. So now I'm comtemplating replacing the crank with the same thing but in GXP (non-BB30). So now I need a bottom bracket adapter to do this. I know nothing about bottom bracket adapters..... Somebody please school me. What brands, technologies, etc. Not interested in any ceramic stuff.... Just reasonably priced, reasonably light, & reliable. Also, will the adapter increase my Q-factor ? I'd actually like this... as long as the chainline/shifting isn't negatively affected..