RE: 1/2A THRUST-O-METER
Salat, Thanks for bringing this post back up!
CP in your tests it looks like for "our" kind of planes the overall winner would be MAS 5.5x4 Good thrust and pitch speed !
Mr Cox mentioned this prop in Salat's cox prop thread - I've had a few of these but never gotten around to mounting one up.
PROP RPM THRUST OZS
COX 5-3 21200 17.6
MAS 6-3 17900 20.0
MAS 5.5-4 22700 18.2
MAS 6-4 17600 19.2