I like the look of Hope, the machining is nice to look at and feel but ironically, it's an inferior option- Hope can't forge parts like that so they cnc them, but it makes for a heavier and (for a given weight) weaker part. (I'm pretty sure their machining is designed to be really obvious, they certainly have the kit and the skill to make more refined parts... but the hardware to make small forgings costs megabucks so better to make their weakness a strength, clever).
But objectively, for the price of a Deore brake all you can do with Hope is buy a couple of sets of pads then squeeze them onto the rotor by hand, so I reckon Shimano have them beat on that level.
In conclusion, Formula.
Half a dozen Formula brakes have been owned within the family and they all pissed themselves and died. I've got a pair of C2's and two pairs of Mini's that are still going strong.
Also, the tensile strength of Hope's aluminium alloy blows the magnesium on your formula's out the water. How much that matters considering the differences between cnc and forging I don't know as I'm not an engineer.
Thirdly in regard to the shimanos, I have small hands and the hope adjusters do actually work properly. Whilst the shimano's don't and also happen to lack the feel that I get through the hopes.
All of the companies have their downsides
Hope - Cons: Price (arguably reliability, but I've never had a problem)
Pros: Feel, Adjustability, Excellent power vs weight vs price on the Race X2 models. (Eg a cheaper alternative to XTR)
Shimano - Cons: Adjustability, Feel
- Pros: Price, Reliability
Formula - Cons: Reliability, Price, Spare Parts Support
- Pros: Weight, Feel, Outright power on the newer models
I went with Hope as the pro's/con's suit my requirements.