my experience of them are
hope M4…constant fettling from day one, always having to centre the pads and play about to get a decent lever feel, and they failed in the alps this year. would never buy again.
guide rsc…been faultless and I like the lever feel they’ve done 2 weeks in the alps this year with no problems…would buy again.
Zee…..have these on my dh and they’re amazing, great power and feel..
would buy again…