My 91 560 SEL has a very, very slight fluid leak in a front caliper. I priced rebuild kits, which are about $30, and rebuilt unloaded calipers for about $50 each.

The rebuilds are ATE or Bendix and priced the same. But it was suggested to match what I have installed.

First, does it matter if I switch caliper brand?

Second, is one better than the other?

I figured replacing them would be easier than rebuilding myself. Especially given the small price difference.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car