I own the midnight blue oxford weave, here is a pic I posted a few days back. I also have the midnight blue in the diamond weave and linen. Here is the diamond weave from a few months back. From the swatches, to me it looks like the grossa, fina and diamond weave are all a touch darker than the oxford weave. Also from the swatches, the oxford navy (#3) is a good bit lighter than the #2 so if you wanted both I say...do it! As always, I think the diamond weave is a good option as well.