I have a new 3.2 that just went on my Edge. Have'nt flown it yet but when I ordered the engine from Brison I asked what prop they recomend for a light weight 80" plane and they said a MSC 22-10. I have a Zinger pro 22-8 which is what the engine was test run with and the tag said 7530rpm w/Zinger pro 22-8. Get one of each and see which is best for your setup since different planes will favor different props on the same engine.