My personal experience with Hope V4 is…terrible. No power, needed bled all the time, sticking pistons (from new and after they had been to Hope to check). I know that may be just unlucky, but I thought they were absolute crap. Looked nice though.
Run Mt5s across 4 bikes now. They don’t feel as “premium” as the nicest from other manufactures. The performance is superb though. Massive power, very easy to control…not to mention they’re about half the price of Codes/XTR/V4. They are the best brakes I’ve ever used in slippery, rooty, wet conditions.
Yes they have plastic grub screw in the lever body, I’ve never had any issue with them. I sometimes find getting a decent bleed on the rear can be tricky, not sure why. Also, they can be fiddly to align to the caliper. The old loosen the caliper, spin wheel and hold lever trick just doesn’t seem to work with them and I nearly always have to adjust by eye.
Overall though, the best brakes I’ve used by miles.