School me on ATI Balancers

Which ATI balancer is everyone running? Do I want steel or Aluminum. I know I want Internal Balance because my new engine will be internally balanced. When I look on summit it seems there are too many options.
Engine Specs:
340 block
Molner 3.79 crank
Molner H beam Rods
RaceTec Pistons
Trick Flow Heads
Cam: undecided
Intake: Victor
You get the idea of where this engine going.


Pretty much my identical engine.
I have a steel ATI balancer on mine.