If you are new to mountain riding, then selecting the "right" track is an over complication. Chances are you will struggle to realize the top end performance from any of the tracks. Pick one that fits in your budget and will hold up. The cat track can take more abuse and it does well going up a hill. But, it floats more coming downhill, causing you to carry extra speed with less control. The x3 has better floatation from a start and less bite in heavier snow, but it doesn't get as sketchy on a descent after a climb. The doo track outperforms the x3 on average because the paddles are a bit stiffer and taller. The camso 280 has stiff paddles that really bite well in all conditions, but they need a lot of power to get good initial floatation; however, the 280 has the best throttle response because it is so lite. Taller paddles can heat up at the base if you go fast on the trail and cause paddles to come off. So, if you are planning to fly down trails for most of your riding go with a lower profile than a 3". If you're planning to be off trail more and stay under 60 to 70 except short sprints, then a 3" will provide better floatation in the loose snow. I don't know how you ride or what you plan to do. So, you need to think more about it than just taking recommendations from people who have success with different tracks. Good luck