Been there too! had a yeti 575 sold that and bought a cotic soul and many other hardtails, thing is you will be more tired on a hardtail after a few hours riding and you cant keep the power down over the ruff and steel is not that light so you will have the same weight as your five and less comfort, control etc . I bought a short travel trail bike, 120mm , problem solved !!! just enough to take the edge off but requires bit more skill than your 140mm five and lighter !