Hello, I am in the final phase to decide for one of the two models. Who knows both vehicles and can give me a tip. The SL is driven with us third vehicle and only in nice weather. mileage 5000 KM per year. The 350 would have the 272hp and he 500 SL the 387hp engine. Both are very well equipped. The 350 is black/black of the 500 it is silver/black. KM power: 350 he 37000KM Built. 2007 of the 500 48000KM Built. 2006. Price: The 500 costs 2500 Euro less! A cylinder of eight already has its appeal. Thank you for your constructive opinion. Cabrio 123