I have a Raptor 18 and really rate it. Once on even if very heavy I don’t notice it. As first I found it to hurt my back but after a little adjusting of the straps it has been faultless. The bladder is the big selling point, far better than the Camelbak mule it replaces. Sizewise its perfect for all day rides and short after work blasts as when only half full the straps pack it down really well. The magnet is simple but very effective.
I also have a dakine helipack which I use for commuting to work. Its absolutely bomb proof – nothing broken in the 6+ years I’ve had it and I’ve used it 5 days a week and for boarding, holidays etc. Not tried the nomad so can’t comment on how good that is for biking.
Camelbak would be my third choice although still a very good product.