On top of that, think about the technology that can change in 5 years???
In 2003 Polaris was using the EDGE chassis, Arctic Cat had the original FireCat, Ski Doo had the FIRST REV, and Yamaha I **think** had the first 4-stroke.
Think now to 2008.....ALL those sleds had been drastically changed and none of them were the "top of the line" production sled any longer.
i got a 99 indy 500 with 7600? miles on it it's something like that and i've put a new voltage regulator in it, a new speedo key, a new headlight bulb, a new spark plug cap, it's on its 3rd set of slides, put some plastic ski's on it this year, 3 inch riser, low windshield, mirrors, handguards with custom extensions, painted the hood screens and the nosecone vent and the running board trim, and i put on a lot of stickers. Sooooooo.. anyways, I haven't had many "repairs" most of my stuff i just added and this sled has been super reliable and not only is it fast for a 500, it gets 14-16 mpg!
Here's another take. I was going to replace my 2002 xcsp this year as I was edging close to the 6,000 mile mark. Instead I decided to keep it and bought the shop manual for the sled. The last couple weekends between rides I have been pulling of parts and checking everything for wear and making sure the sled is perfect. I decided to use this sled to learn how to do most repairs myself saving a ton of cash. If you never learn how to fix this stuff it makes sense to buy a new sled every 6,000 miles. I have a new respect for the high mile sleds and the owners who maintain them.