Back in the day I had a Fantom Dyno. Thing was great! Could do alot with it based upon the data you were getting. There was a slight learning curve when you made changes. The total opposite happened that what you would think.. I figured alot of it out over time.

I see HobbyKing has a meter for props now.

http://www.hobbyking.com/hobbyking/s...arehouse_.html