this is just for sport flying at my local field and maybe racing people that are spped freaks like our club president. i didnt really here anything about the mvvs 40 u all talked about rossis and jets. how does a mvvs hold up to all of these. it says it turns 20,000rpm. I think im goin with the mvvs 40 or a rossi but not sure which rossi to chooses if i go that way. one person at my field said a rossi 53 but wouldnt that be to big. anyway lemme kno what u guys think. this really helps. thnks guys.