No turbine yet, but I’ll go with the K100TP for sure. The vario props are actually not that expensive. Actually less the the 5 blade from Skymaster and it’s adjustable. A 3 blade (which is what I’m looking for) is not much more then a normal fixed prop. A 5 Blade is around $350CAD, the skymaster 5 blade is $500CAD. So pretty decent price.