which freeride/ dirt jump hartail frame?

shore_riding_rocks

hi, i am thinking about getting a new hardtail frame as my other one's beginning to die. I mainly ride freeride/dirt jump and and my budget is £300. It has to be able to survive roughly 4 - 6 inch front fork travel, have ISCG mounts and the ability to run a rear mech. So far i have found:

Transition Trail - or - park
NS Bikes B*tch

thanks