Well not leaving Delgatos topic, my hotspot has been fine for almost 4 years now with this powerplant, proving the good design of the hotspot and I am just trying to give his question a spherical answer. I do fly it alone on a remote airbase that only I have permission to fly models at though and the few times that I have performed public displays elswhere I have used the power reserve very cautiously.
I must say though that I used to have a P-120 installed and the top speed difference is not so noticeable, its mostly the rate of acceleration and vertical performance that has a dramatic difference and it actually may have been more fun with the 120.

Paul