Best motor for 3.3 Revo conversion?

[freeagent]

I dont think the age matters.. Muggydude has a point about the torque. The 2200kv can eat parts with no troubles at all, the 1800kv would have alot more torque.. I dont know about you, but Ive chewed 5 rear diffs already in my revo. I did shim this one, my 6th, and so far so good. I only run 6s tho, so that could be my problem