I went through a great deal of trouble on this subject on my 06' 40hp e-tec. I ended up getting the best answers, experience and help by calling Powertech direct. I have seen several test by magazines and the Powertechs were always first or 2nd in hole shot, mid range AND top speed.
I have an aluminum POS 14x17 and get 27mph in decent rolling ocean waters on my 2006 AB 390 VST, no trim, 6000rpm
I get 33mph trimmed at 6,600rpms.
I use it for surf riding.
I am not going to spend $400 on a stainless but if I had the money as my current prop is pretty decent. I would go with their stainless 3 blade, 13x15 or in that range if I were to part with $ right now. (I don't care much about top speed, as anything over 25 becomes "unpleasant" for any length of time in the blue water.)
I have found most shops imbeciles and liars when coming to propping a RIB. Powertech has experience outfitting rescue RIBS in various countries.
Michigan Wheel has a good fitment guide for their props for the E-tec as well. I have talked to propeller shops who say the Powertech and Apollo's are best made.
Raker seems to be notorious for crap hole shot on every article I've read.
I would never buy a BRP prop. They just don't come out anywhere but mediocre in any test I've seen. "Also-rans."
SoCal Waver Rider
2005 AB 390
w/ 2006 Evinrude E-TEC 40