I have a 4 Blade Puranha prop that I carry as a spare in the boat for my DT200EFI. I brought it VERY cheap off ebay a few years ago, and it came with a set of extra blades.
I've tried it a couple of times, and it appears to be very good, but I've not tried it for any length of time.
The main advantage for me is it's weight when carrying it as a spare, and of course the fact that I can also carry the spare set of blades, so that if I have a really bad day I do in effect have 2 spare props, all for less than the weight of one Ali prop.
When using it as a full time prop you could obviously carry a spare set of blades instead of a full spare prop.
That doesn't answer your question really, but it may be of some help.
RIBBED For extra pleasure.
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