I have always been told to buy wedges with the same brand and model. Then it's is easier to know which wedge you should use in different positions.
If you have two wedges with the exact same qualities, it's easier to know which club(loft) to pick.
Okey, Vokey Oil Can and Chrome aren't the most diffrent clubs out there. But if I was the one who was going to buy new clubs (which I did yesterday by the way
), I would pick two clubs in the same model.
This is my personal opinion, I didn't mean that everybody should do what I say. There is so many other people on this website who things I'm talking rubbish, but I'm shure (at least hope) that there is someone who is agreed with me.