The HATR system is basically an unboosted 407 tail rotor. Lots of authority but in reality, it should be boosted.
I have flown 47's, 206B's and UH-1's with Van Horn blades, they are all an improvement on the original Bell blades so I would assume the 206L would be no different.
I'd be interested to hear what you decide to go with and how you like it.