Actually the 120 was a gasser, quite a monster in its own right. Tompa, I have been flying the .60 since its inception. Wasn't on the shelf two minutes. Two years later, I'm on my fourth. Just got back from the field this minute and the grin on my face is still as large as the first flight. For me the .60 is a keeper, its not perfect, but so few are. Also, this evening, we maidened a .46 UCD with a Saito 82-4 banger. Boys, turns out that the horizontal stab sits much lower on the tail than the .60 resulting in zero dive to the wheels when rudder is applied. Got too dark to really put it through its paces but proved to be very good in the way it handles. Floats just like big brother. As far as motors go, I know economics plays a vital role in modeling. A two stroke will fly it, but only a four stroke will do it justice. This plane is not a fast flyer and depends on the low end power and the ability to spin a large prop. I started with a more economical Saito 100 4 stroke and it flew great and I learned a lot of different 3D stuff. It wasn't until I put on a larger 4 stroke, that I realized just how much I was missing. Don't get me wrong, I don't run right out and buy all kinds of stuff on the market, but the smaller engine didn't save me anything as it was canceled out in replacement. Budget wise I think that you will really enjoy the .46 UCD. 2 stroke vs. 4 stroke all depends on how serious you are about 3D. Good economics starts with the right choice, the first time. Personally, I would wait and save for a 4 stroke. Good luck in your decision and welcome, Joe