It seams that some folks go for the CGW 85c trigger w/ DA pre-travel and SA over-travel set screws. I have one in my 75BD. I just installed a CZC Old Style 85c trigger in my 85B w/ just the SA over-travel set screw and i am liking it so far. The DA pre-travel is not as important to me, but nice to have.
Here is a comparison pic of the stock 75/85B trigger (I believe it is the same as the
new 85c trigger without the set screw) and the CZC Old 85c trigger.
<---Stock 75/85B Trigger - Old Style 85c Trigger--->

Installed in my 85B, but should look quite the same in an SP-01. Edit: gdawgs56 has provided just that.
