Figured I'd give an update...
I e-mailed the devolper of the plane and he gave a response that makes sense:
The pusher config is slightly faster than the puller config just because the motor is running in it’s optimum direction. The puller is more aerobatic because the propwash goes over the elevons and you can use the power of the motor to move the plane around even though your airspeed may be almost nothing. You can do really tight loops and faster rolls with the puller.
The pusher has less elevon area so the controls are a little more relaxed. There is also no prop wash going over the elevons so a little forward motion is required to have good control of the plane.
Going by this I think i'll go with the puller config...since the speed difference is only slight, and the aerobatic ability is better it's more what I'm looking for.