Review of the Hope V4 here:
Hope ups the power
www.bikeradar.com
BTW, the Shimano M7100's are 2 piston brakes, while the Hopes are 4 piston. Shimano does make a number of 4 piston brakes as well, including the M7120s. Review of those here:
Mid-range Shimano stoppers with plenty of top-end features
www.bikeradar.com
Still cheaper than the Hope's, but not half the price. You might also consider the price of replacement pads - the 7120's are finned for heat reduction, so cost more than normal non-finned pads.