Hi, I'm doing research on my build, and the whole Boost standard has me a little confused. I've searched and read through previous posts where people mention that the 52mm chainline is the standard, and one user mentioned using a Shimano XT M8100 crank, and had 1cm of clearance to the chainstays.
I'm also planning to use XT cranks, and I see that the M8100 part with 52mm chain line, "works with 142 or 148 O.L.D., and prioritizes narrowest possible Q factor"
Meanwhile, Shimano also makes the M8120 crank, with a 55mm chainline. I've seen some sites advertise this as the "Boost" crankset, and that the "55mm chain line works with 148 O.L.D., and prioritizes frame and tire clearance over Q-Factor"
Is the main take-away that both will work? Are there any negatives to having the 55mm chainline? Thanks.