RE: Dynaflight Butterfly
Years ago I had one but it was a kit,( I don't know if you are talking about an ARF ). We replaced most of the bulsa stringers with spruce and put an extra steel bar in the wing along with a few other mods. It was a blast to fly and I was able to do things with it that others just held their breath over. With that big wing they were noted for folding if built by the plans and flown hard. I liked the plane and as said above you should enjoy it, unless it's a kit and you haven't built before, it can be a pain to build.
I won't go so far as saying it would be a good trainer, it won't be bad ( there are a lot worse) and you will enjoy it but it will also teach you some bad habits as far as I'm concerned. The good thing about it is that it is slow and easy to keep track of. Just remember not to stress the wing to much. One other point, on all of them I've been around --- when taking off be real carefull how much elevator you pull into it, especially with full power, they have a habit of going straight up before you know it, then don't have enough power to continue if you aren't fast enough to get it straight. Just take everything SLOW and easy and I think you will ENJOY it. As I said I liked the plane and wish I had my old one back. If they do make an ARF of it I might have to look into it. ENJOY !!! RED