Where do you ride, good chance someone might let you try theres out, I would if your ever around. You don't have to have a skid but after you ride one you will wish you would have had one from the go.
This is a really good thread, but long, it talks about lots of different skids, options, and results. Its in the yami section but still same concept.
http://www.snowestonline.com/forum/showthread.php?t=271886&highlight=KMOD
The partial kits work, (what I rode to start with) but like mentioned you will have to convert your shocks and if you upgrade they will only be sell able if you change them back $$$ or sell them to someone that want to try it, there where a few times I wish I had adjusters, like when you add 3gal of gas to the back of the tunnel and then the valving doesn't work as good, still works fine but with the clickers you would be set in seconds.
The full kits, you get raptors! triple rate springs and a 20 click adjuster with straight rails. what I am getting. The t-sled skid comes with pretty much the same thing more or less but different brand
I am not a fan of t-sleds older skids at all, but we will see how there new skid does, I like that on the kmod the arms are equal lengths and if you want you can adjust the coupling from 0-100%.
One of the big things I noticed was if you have to climb a rut from someone else with a stock skid it throws you around, the kmod lifts the sled and you just float where you want to go. Sidehills better, maneuvers better when climbing and on descents. It absorbs humps that will make you wheelie with a stock sled, its just the chit. Try and see if someone will let you ride one in difficult terrain, you wont be able to get one fast enough.
I would still try it stock though and then if you change your mind you can fill us in on the difference, thats what I usually do just so I know.