Originally Posted by
blcknspo0ln
Rival vs. 105
Force vs. Ultegra
Red vs. Dura Ace
but most say SRAM is best in class until you get to red/DA level, which it then evens out. I've ridden 105 and a force/rival mix, difference was not discernible for me except for the shifting mechanism (double tap).
+1 their both good I think it comes down to preference. If your looking for something with more gearing then you could go with sram apex 11-32 which is the big advantage of apex but if you didn't want the 11-32 they offer normal cassette sizes as well. I ride sram apex and prefer it over 105 but both are nice for entry level.