Think I’ve always been lucky with the Shimano brakes – running 4 pot xt on one bike and hope e4 on another. Shimano win easily on stopping power, Hopes seem to have better modulation. Never had any problems with inconsistency on Shimano brakes but usually do a quick lever bleed when I change pads – only takes a couple of minutes
Both Hope and Shimano have been way more reliable than the SRAMs they replaced – last Alps trip I went on there were 5 of us had SRAMs and all had big issues when they got hot. Nobody running Hopes, Shimano or Magura had any issues at all
On balance I’d go for the xt 4 pots – soon get used to the extra power – just don’t squeeze as hard! I wouldn’t underestimate the value of a shedload of stopping power – on long descents it saves your arms.