The Losi metal viscus diff pinions still strip quickly with the stock motors.My Rc 18s have plastic diff gears and never stripped one. The trinity is the same basic desighn as the RC18s, but a test I read claimed that with a brushless setup the chassis would twist under acceleration due to soft plastic. Other than that they said it was good, but they said that about the MLST also. I did hear first hand the duratrax mini quake ia a good truck and can handle brushless power well and is durable. The RC18s have the best upgrades and very durable. Google the ones you are interested in and check the forum threads that come up to see what peopla say good and bad. The mini zilla from hotbodies is another.It lacks oil filled shocks but seems tough. Here is a vid of a brushless mini zilla, there are also RC18s. Castle brushless powered to boot. Good video.
http://www.youtube.com/watch?v=IjhOVNDTlCk
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