Have a bike that came with Magura Hydraulic rim brakes , the hydraulics make them my favorite V Brake I've seen no reason to change them, but,

If you are a sphincter clinching agressive Downhill fast descender , loving the adrenalin Rush ..

Hydraulic discs are where the game is At, these days , discs .. bigger the better and perhaps add some more funds for the heat sinking alloy core Discs ..

Brakes=friction=heat.

My disc bike is small 20" wheel BB7 the Speed dial levers are Of die cast parts ,

Best cable MTB lever? the Avid Speed Dial Ultimate are nicer, CNC and over $200 !