I think the Comp XE275HL will outrun that 509 cam every day. If that isn't enough, the XE285HL will definitely school the .509.

The new MP price on the 509 cam is obscene.
It is available in the 108 LSA original version and also in a 114LSA version to tame the idle a bit. But it still has lazy lift rates and far too much duration for the lift.

My twocents

R.