I am looking for some opinions on what track to run on my pro. its currently had a 155x2.5 CE with 8 tooth extravert drivers. I am running a timbersled rear skid. which is gonna give me the best deep snow performance and track speed the 163 pro track or the 155CE??? the reason i asking about the 163 is i found a good deal on a track and rails. the sled will be running a 660carls cycle. I already went the x3 route and that wasnt for me. thanks for any advice.