I would get a mugen, I have not been Impressed with losi or associated durability. Also the mugen is enexpensive! also mst1parts.com has about all the parts you will ever need. They are about the most durable trucks I have ever seen and the also handle great. In the last 3 weeks of racing I have yet to see a mugen come off the track for repairs. I have on the other hand seen about half of the AD2 and half of the rc10gt's come of the track for repairs.