There is a technician who helps out a lot on this site, euro 287, who has frequently recommended the acm evaporator.

I did a quick search under 'acm evaporator' under his username, and got a lot of hits.

Here is a good example:

http://www.peachparts.com/shopforum/showthread.php?threadid=39708&highlight=acm+evaporator

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".