For 20% in the 3.3 I like the mc 59, idles good, great powerband. For a all around nitro content from 20%-33% I like the Traxxas 3232x, runs good on all nitro contents and wont burn out like the mc 59 on 30% or 33% just doesnt seem to have the same punch in the lowend as the mc 59. My third choice is the mc 8, its pretty close to the 3232x.