I have bought a top from online from cabrioworld and I am very pleased with it. It looks like the original. Same outside color, inside with the same doby pattern material. The only noticeable difference is that there is no MB logo printed in the windows.
Regarding the installation I have decided to do it myself. It took me 2 full days
Nothing really difficult, but since it is glued with contact ciment it's a little stressfull when you decide to actually bond it. It does not allow much adjustment. But hey, the aftermarket top fit just where it's supposed to be.
Pierre.