Older Saint were overkill IMO, just because of their power and blunt application, they were for applying a lot of brake in a hurry and not the best for applying feather touches (not impossible, it just needed way more care than is helpful). But the new one’d be grand on a trailbike, far more subtle. Still not my choice mind.
For me though Shimano have to be cheap, because basically you have the 2 years warranty and after that you need to replace entire chunks. Frinstance you can’t buy a caliper seal so you have to buy a caliper. Not a problem with XT and downwards because a caliper is cheap, barely more expensive than buying seals in fact. But with XTR and Saint it’s a lot more expensive. (though, you may be able to mix and match parts with the single pot calipers?) So basically the lifespan and general vfm is a real steep curve
Still don’t think there’s a better brake than the old Formula The One personally but they’re discontinued. Powerful, subtle, reliable, light and servicable, and you can get a set for £100 used these days. Only real downer is that though you can buy parts, they’re expensive.