LaserSVT

My CL600 is pretty much all sorted out with new ABC stuff and all. No issues I know of. I have it listed to sell but am being offered a partial trade with a 1997 S600 Coupe. Supposedly no issues and in the color combo I love. I am told the W140 is much quieter and smoother and more robust than the 03 CL600 I have. I realize its over 150 less HP but I am in the process of fixing up both my houses and would like to free up some cash. Looking at book values, if he trades me the car and $5500 it seems in line. Anyone else here have or have had the S600 Coupe? How do/did you like it compared to the W215 CL600?
Anything I need to really check out on the W140 before I make a commitment?