Completing a gravel bike build using a 105 level R7000 crankset. I may switch to a GRX crankset in the future (and swap to an appropriate FD as well). Shimano tech docs list the BB -RS500 as the bottom bracket for the GRX-600 11 speed, whereas the BBR60 is the listed BB for 105 R7000. The BBR60 costs just a bit more, but does that make it better? I thought I read somewhere the RS500 had larger and fewer bearings, whereas the BBR60 had more and smaller bearings. Although now seeing the RX-810 gravel crankset also lists the BBR60. I’m a little confused on this one.