If I were you, I'd just stick with the Ate original pads. They are the best you can use in my opinion. To prevent squeal to a degree, make sure you use original MB anti squeal/sieze paste on the backings. It comes in little packets. One packet is good for two front pads. Use it 1/2 and 1/2 on each pad for each side.

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Rgds,
Aaron Greenberg
MB technician
'67 250SE Cabriolet
'77 450SL
'79 6.9
'79 6.9
'80 300SD
'85 380SE
'89 420SEL
'93 300E 2.8