How big are you?
Probably Marker Griffon or Jester. I would say FKS140/180XXL but they can be a massive anus to get back into in pow, which is presumably where you want to be using your Hellbents.
I would say FKS or if you could find a pair the 2010 deadbolts, specifically the orange ones just cause they would look soo nice on this years hellbents
Jesters mounted dead centre on hellbents is very much like making love to a beautiful woman ........ you gotta lie em down give em a tickle hold on tight and then ride that ass til it breaks.