They are all capable of winning but each are a bit different. I have 2 Hyper 7's (well one is a Pro and one I bought as a rtr roller barely used turned into a parts car), and now I run a MBX-5 with the Rex P5. Its just a great handling buggy that steers as well as if not better than the Kanai. Mugen is nice, but parts can be hard to get sometimes, and is much better suited as a racer than buying for bashing. The Hyper 7 Pro is one sweet buggy also. If you go with the Hyper, I can sell you a used roller for cheap with tons of parts from the second car. The major thing thats missing on the H7 is the diffs were stolen when I needed a diff to hold out in my EK4 when it first came out.