Depends on what you want. I've got Duralast Gold ceramics on the front, back is still factory.
As for rotors, ours work fine from a functional standpoint. If you want something fancy, I'd go with R1 and I might be getting a set from them as well. Everything I've heard about them is good.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne