I race a r2 and a MBX-5 and I like to use the R-2 better. I don't think the Mugen is worth the extra cash. It has more cool features, and is a little faster, but I am disappointed after spending that much cash.Our track has a amd transponder system and the lap times from my r2(O.S. rg) are consistantly faster than when I run the MBX-5(Nova rossi P5). The Mugen might be a little better, but not for the price..My season just ended and the results were H7 pro,9.5, R2, Pbs, R2(me),mugen, r2,kanai, mugen..The rest were ofnas down the line. If you want a pro level car then buy the Mugen or Kanai but at club level don't waste your money..Next year our track is going to change and be a lot tighter and more jumps, the mugen might handle a lot better then, but If not, it is EBAY time and I'll just get a Hyper or 9.5.....