Ive flown both the .60 seems better. im using a cheap ASP .91 4 stroke $169 new. flys it in fact better than my O.S. 91 pumped did. both are on 30%. unlike my funtana. where im still adujsting,changing motors,moving weight. and still flys marginal. GP didnt do like H9 their 60 size plane is a 60 size plane.