Thanks for the input! A good, lazy day flyer is what I'm after with this aircraft. My first thought was about putting a Saito 100 in it, but thought about a small gasser after looking at the RCS 140. I like the fact gas is cheaper than nitro, and gas engines tend to be less troublesome. The Saito is quite a bit less expensive to buy though, and if it is enough power, I may just go with the Saito.