Same car, very few differences. The '98 had MB-tex upholstery standard, with leather optional. The '99 had a leather/tex combo standard, with full leather optional. I think the '99 got a new/different radio; don't believe it's really any better.

The relatively new five-speed automatic transmission was still going through some maturing at that time. A '99 probably includes a few updates from the factory that may or may not have been done to a '98 by a dealer. Pretty minor issue, however.

I can't think of anything else between the two. Just go for the best condition/mileage/price/records car you can find. Don't worry about the year.

- JimY