I may have gotten lucky, but my Craftsman GTS6500 is still going strong since 2006. I have beaten and abused this tractor, cutting 5 acres of rough and bumpy field grass, pulled a utility trailer hauling mulch or dirt. Probably has 8-900 hours on it.
I found out last year that the trans is a K-66 and can be serviced.... did that and it's like a new machine. I had to replace all 4 tires, basically dry rotted and cracked, they would go flat in about an hour after filling. I have replaced the blades at least 6 times.... just wore them down to nothing....
It has the Kohler 26hp twin, had to adjust the valves twice, and replace the fuel pump. Changed the oil every season.
The surprising thing when I looked at those tractors, the dash cowling is identical to the one on my Craftsman.... even the ignition switch, light switch, and hour meter.....