I'm back to considering an SL again. 90 to 98. No 600s and probably no 500s either, although there are some damn fine looking ones out there with low miles in the mid to upper twenties. What should I be looking/looking out for in these cars. I know books and records, I mean pluses and minuses. I plan to drive it around 30,000 miles a year open highway. I've heard to stay away from the 97s. Talk to me yall! Mileage, ride, upkeep???