Your opinions on the models or engines CLK 320/280/350 a

Hello all, At the moment I am unwise about the choice, between the CLK 320 convertible BJ2005 and the CLK 280/350 convertible from BJ2009. Some have said that the M272 from Bj2009 does not cause any problems anymore b.z. The problems before have been fixed. Is that really so? How good is the transmission from the 350 (7-speed) in contrast to the 320 (5-speed)? I guess the consumption between the 280 and the 350 is almost the same or? Is there a big difference in the consumption between the 320 and the 350? What would you do in my place and why? Does someone privately drive the 320/280/350 and can tell what about it? Is the price of 900€-10000€ justified? For a CLK 350 convertible elegance BJ2009 with 150,000km in black with beige full leather seats and harman Kardon sound system. Otherwise, what is missing from the car is the seating ventilation and PDC. -35%Autobahn -45%City I can help you with the CLJ2000.