Planning my first purchase EVER! this fall. Won't be new, but hoping for a 2009/ 2010 Poo, most likely an RMK. Starting to get a little worried with the threads I'm reading on here, but my father-in-law has ridden them his entire life (and lets me ride them also). Anyway, plan to spend around $5K - $6K. I don't know a ton about sleds, but have absolutely fallen in love with the sport, and the Wife FINALLY caved (after 10 years of me riding her dad's). Any advice on purchasing a used sled would be most appreciated, would like a 600 w/ 136 - 144 track. I origianally thought a 136 would get me anywhere I wanted to go, but quickly found out during this winters trip to the Black Hills this is not the case. Anyway, do I need to be concerned with the power of a 600 vs 800 with the possible 144 track? Any other advice would be great as well. Thanks everyone! Oh, one last thing - I know there are many trailer options out there, but what I'd like to know is (assuming) I end up with a 144, would it fit on a 10ft trailer or would I need a 12ft? Hanging off isn't a concern of mine, but what is a concern is me wanting to eventually go with a capped trailer and it needs to close. LOL! Thanks!