Of course, the E prop is a proven propeller for the Rotax engines, light, reliable. Smooth, balanced, long TBO and in their thousands out there. The prop you talk about is new, brand new. I believe Trent Palmers 915 Rotax with 600 hrs on it ate itself, ( a very expensive engine full of metal now. ) now it could be just bad luck but E prop make a big deal about Rotax engines, light propellers and gearbox longevity. It's goes without saying I'm in this camp.
Lyndon