I use to have a Ofna Chrome top and thought it was good untill I upgraded to the Mugen grey box with a lipo, by far one of my best investments in rc. The chrome top works just fine and there is nothing wrong with it, but it is big and weighs a lot! I weighed mine and I think it came out to 14 pounds and then I weighed my mugen box and I think it came out to 4 pounds. the numbers were something like those but I do remember for sure that there was a 10 pound difference. And still my smaller, lighter mugen box is more powerfull than the ofna box. Either way they will both work but from my experience the mugen box has been better in every way.