I upgraded my groupset from shimano 105 to ultegra r8000. The brakes were one of the last pieces I changed as I loved my 105's but just like all the other parts, the quality in the r8000 series is amazing. Setting them up was so much quicker and easier than the 105's and I can run my 28mm tyres easier now thanks to the increased clearance. For anyone thinking about switching to the r8000 series, I highly recommend it. You won't be disappointed.