I only had the advice of Jay to work with on whether the 209/216 Inertia/Crower would make more power than a non-MDS 6.4 SRT cam. Jay told me the inertia would make more power. He made $$0 from the advice so i took it as face value as genuine advice. Time will tell i guess
Ive seen quite a few people have terrible results with aftermarket cams but they basically all came.down to tuning. Most tuners seem to have no idea about VVT or Dodges nuaral network and simply switch both them off. A buddies cam swapped 300 picked up 65whp switching from 1 tuner to another with a 6.4 with a MMX nsr cam
The VVT trips a lot of people up, Jay has good handle on it, there are a few guys on HP's forum who also have good handle on it. there's a good bit of power there if you can use it right.