It is scary that someone agrees with many of my comments , lol... Thanks bpryor!

Anyway, my ZDZ80 is somewhat difficult to start. I'm on my 3rd ignition system and it has become gradually more and more difficult to start. I'm expecting an updated version of the ignition in the mail from ZDZ. (I got one of the first ZDZ's over in the US. The ignitions out now from Falkon are supposed to be pretty good, or so I've heard. I will find out shortly.)

The best comparison, as bpryor states, is to compare rpm numbers between engines with the same type & size of prop. Try going to rcfaq.com, it will compare many different engines, but take it with a grain of salt. I'm not confident everyone gives true readings (kind of like asking women to tell you what they weigh!!!)