I'd go with the monsoon over the avalanche. The avalanche uses thinner buggy arms and hex extenders (extenders puts more stress on the suspension parts), but the monsoon uses thicker arms and no extenders.

Also, I wouldn't go with the T-Maxx. I use to be on the traxxas forums a lot (but ever since redcat I haven't been) and if you look in the market place and look at why people sell their T-Maxx they say it's because it costs too much to keep it running.