Dual brushless and a spool.

[RC-Monster Mike]

The 1/8 diffs are the ultimate in durability, but the Maximizer diffs inside aluminum cases, when properly shimmed can take quite a bit of abuse. If you aren't doing any jumping or svere off road running, the maximizer diffs will likely last you a long time. If you want to freely smash your truck into oblivion, the 1/8 diffs will be the better option.