I am planning on purchasing a Venus 40 and I am having a problem with what engine to put in. The real question is which engine do any of you recommend for this plane. I will be using it for pattern (Sportsman 401). I have been looking at the Saitos but I wasn't sure which one would actually fit. The 82 has the same specs as the 72, but from what I am reading from Horizan Hobby the Saito 91 has the same specs as a 65/80. Or should I go with the O.S. 70 Surpass II. The 82 is also just as heavy as the 70 surpass, and the 91 is a couple ounces more. What do any of you think. If you have any other recommendations that would be great. The only this is that I cannot afford YS.