Evoc FR20 here. Fantastic bag, suprememly comfy when riding, doesn’t move about at all, doesn’t change shape/fit with changes in load/water, will swallow an entire days worth of stuff comfortably, has teutonic style organisation in the compartments and is built to last. It is a bit heavier than most but as the extra bits are the bits that make it worth using I’m not too upset by a few grams, especially after you have filled it with tools, 3L water, food, etc.
I now can’t use my old camelbacs as they just feel aweful. I like osprey climbing packs and they have a good build quality but the cycling ones moved about too much for my liking and still had the “scuba tank” feeling on my back when full of water.