Which commentary on the MMK should be studied first?

I am currently casually reading various things, and Ocean of Reasoning is one of those things. I've began to feel that I should pick a challenging reading to focus on, but I'm thinking I might want to read Ornament of Reason before Ocean of Reasoning. Is one or the other traditionally studied first? Or is there some other commentary before these that I should study? I am already well acquainted with the Mūlamadhyamakakārikā itself.