Ok, time to stir up some feathers...[8D]

So needing to decide on a larger turbine for an upcoming project and want to get some input for people THAT ARE NOT SPONSORED OR REPS that have on hands experience with these turbines.

I have never seen either the JC mammoth or the JB 220, but I have a JB 180, very nice engine, produces a lot of power and very brutal acceleration without hesitation.

The P-200 I have seen fly, seems good, I have only had a P-240 in this range and it does have some lag (about 5.5 seconds from idle to full power) and can stutter some times accelerating.

Dealing with BOB C. have been excellent, and Peter A. is also very good. Haven't had any JC turbine before so no experience.

Main issues are, SPEED of turbine not just thrust, I would like a turbine that produces the most speed not just thrust so the highest exhaust speed will be the best.