The bps is mostly a function of the input pressure. You'll need to add a shim to the ninja to get the pressure up. You'll need a halo or something if you want to shoot over 12 bps or so. Halo and B2s work fine, they are just heavy and bulky compared to the new stuff.
Any AGD frame will run about the same, they just feel different in the trigger.
The benchmark frames have a different geometry that looks to me like it would be a hindrance to Rt'ing, but I changed mine before trying to make it work originally.
Pm Beemer here on MCB about getting your username setup on AO.
__________________ My Feedback
some things are stickier than others