[megeebee]

I was the happy owner of a 1998 SLS. I leased it new in June of '98, and my folks bought it in 2001 when the lease expired. That particular generation had the best interiors done by GM until then. They were even superior to many other rivals efforts. The SLS was, of course, geared to more luxurious ends, while the STS was the flagship ( I had the SLS because that was what I could afford).

If you are thinking of purchasing one of these then I say do it. If you can find an STS of model year 2000 or newer, the engine runs happily on regular. The STS interior is just that much better, with a little more walnut on the doors and perforated leather. The Northstar in the STS was a little more powerful than the SLS, giving 300 HP.