Looking to pick up another sled this year for a back up/ short tracker/ buddy sled. Keeping it super cheap. I've been looking at rev chassis 04-07 doos 144-151 800s but a friend uist offered me a deal on a 14 etec 600 146 summit. It has some suspension parts and light mods as well. What sled would you pick? Is the newer sled enough to make up the lack of power?