My first post. Looking for a used mountain sled 98-00. I've been looking at the 99 Summit X and the 99 RMK 600/700. Any advice would be greatly appreciated. Going to be my 1st sled.... live in Colorado.

Either sled would be a good choice. The RMK is a bit more forgiving if you have never rode in deep powder before. It would all come down to price and condition of the sleds.