Go Nitro! Electric trucks are great because of their ease of use and torque, but you just don't get the same feeling you get with a nitro. With a nitro you can really hear the engine whine as the rpms get higher and higher. I doubt you are going to be doing this in competition so I don't think it will really matter that the electrics "might beat the nitro trucks. In fact half the fun of bashing is when you get stuck in the mud. Whats the fun in getting through the mud every time! The Maxx trucks are alot of fun and have good tires for mudding but are kind of a pain to work on. I think the Savage would be a good choice also.
Just my .02