unless you test the SRAM against Shimano you'll never know. I used Shimano low end stuff for several years commuting. Test rode multiple brands of bikes with SRAM and with Shimano. Picked up new bike with the SRAM Apex. won't go back. it was that different for me personally. do your own road test and see for yourself. it's only time. your mileage may very but it was a personal perception on the ride that sold me. good luck. hope you make the 180# soon!