As TerrellFlyer said it's just about what you like , 2 or 4 strokes as long as they do a good job is what matters,, and people often argues about an engine type or airplane based usually on a bad experience, after all, they are very expensive toys and nobody wants to have one you don't like. i.e. I have a JR10X and did not get the Futaba not just for the software(both have more than most people will use ever), I got it because I like it!!.