I bought an Excelorin 6.5 for xmas, and it was working fine over the hols, then developed a fault with the esc all of A sudden. Would just judder when throttle opened, and all the lights went a bit crazy. I sent it off to Horizon on the Tuesday, and it was back with me on Thursday, with a new esc! Truly excellent service, and it's been running fine so far. I am well impressed with the service, so just thought I'd share for anyone deep in thought over which system to get (like I was a few weeks ago!).