I just installed the 800z in my 17.5 buggy and ran it for the first time last night in practice. I like it. It's significantly lighter than my old DE10. I didn't notice much of a difference in power and acceleration but I did notice my car seems to brake a lot better and smoother now. I was able to raise the max brake on my radio much higher without fear of losing control under hard braking. The drive/brake frequency setting changes are a new concept to me but I seem to prefer the highest frequency settings (maybe that's why the braking seems so much better now) with the highest power profile setting.