I went from a cloth seat 2000 5.3 that I drove for 12 years, to a 6.2l 2012 leather seat, I kicked myself in the butt for not originally getting a 6.0 at the time, the difference in engines is significant the 6.2 is stronger/faster, (transmissions have been improved as well) the cloth seat was perhaps slightly more comfy than the leather seat but by no means is the leather seat uncomfortable I can sit in it for very long drives just fine, if you test drive or get the awd model it's awesome as well. handling is very comparable with the awd having better capability because the front wheels have power and will show it in certain situations. the only caveat I can truly express going from a 00 to 12 is the interior space is slightly smaller, there is more interior plastic around the rear windows and pillars which reduces the view a little which is one thing you may notice right away, but it's not a deal breaker. have fun shopping!