Finally! I was beginning to think that I was the only person in the world that bought one of these.
I bought an SST16 in 1992; 42C deck w/7 bu. bagger and recycler plug.
Mowhigh is right on about being terrible on hills. In 1993 I got a rear weight kit [80#] to help with that problem and it does so long as the grass is dry. I just do yearly maintenance like change oil, oil filter, air filter, spark plugs & vacuum filters. Repairs I have had to do: Replace gas tank [2nd year] and Replace steering actuators [this year]. I would suggest that you purchase a Tech Manual for the machine because they are fairly complicated to work on and JD dealer shop labor is very pricey [at least in my area, it is $90K per hour].
BPCHAMLEE, a new machine sold for around $4K. A used one in good condition is now around $2K.