I just ordered a 36x50mm V2 afterburner 4800kv motor with the bonded heatsink for $118.55 shipped direct from Medusa Research to use in my Rustler (I would have gotten the one without the fins, but it wasn't in stock). I'm having it shipped home since I only have 4 weeks left up here at school. I'll let you guys know how it goes for 1/10 applications (hopefully I'll remember to post....:D).