Yesterday I purchased the Slash kit to build with my son and that comes with the Titan 12T brushed motor. I'm thinking it's likely I'll want to upgrade that to a brushless. So my question is, it seems like I can go through the traxxas.com\powerup program and get the VXL-3s and Velineon 3500 for $125. Also looks like maybe I can get the vxl-6s with 2200kv motor, though I'm not sure that is designed for or would fit the slash, but that's $165. Should I just go that route or should I look at alternatives like something from castle creations or hobby wing whom I've seen mentioned in this forum or something else?