Hey Stephan. Yea... lets hear how those new lipos work-out for you.I've just put an AXI 28/26/10 in the modeltech Extra with an 11/8 prop and am drawing 42A on a 3s2p 4000mAh 15C pack.At around $85 a piece thats $170 a set.Looking for other makers with high amp draws and mAh's. Definately keeping that motor though ! OUTSTANDING vertical performance ! Best of flights to ya !