Hey Max - I was in the same boat just a short time ago. The De3s (in a step lip) would look awesome and really open up the wheel well, but they only come in 19s and up. I wanted 18 max on the front so that left me w the Wc3s.
Not really a bad decision to be made here as they're both good choices, but I would also go with the polished lip on that pretty blue...