I love the hypers, i think because the natural bodyweight glute ham raise is not hard for me the 90 degree one is easy for me too, so do single leg, it is intense when you start adding weight to it, but I love it for my hamstring and glutes.
My Max one was holding a 54kg dumbell, single leg, so much pressure on the quads, which connects to the knee because of the counter weight of my quads pushing against the pads.
never did 45 degree, i always go for the toughest lol. but that was at uni gym now my current gym is small