Dear Zeeb you are right i know,
I just wanted a cheap solution until i deside to buy the DA120.
I think that for now i will go to speedracerntrixie suggestion because i made a research and finally the Vess 27b is a better overall propeller than Mezlick 27x10.

The problem is that i haven't locate a dealer in Europe yet to order one.

Thank you all.

Alexandros