I don't understand the purpose of having a wing like that. Our cars are FWD, having a wing on the back adds no performance gains to it. And having it just for looks screams "rice" in my eyes. But if you like it, that's great.
Even without the bodykit I think it just goes well with my dark color car. Moonlit blue and black just looks good together. And on a side note I will be getting a body kit when I get all saved up for it, just not in the cards right now.
I had one when they came out (GT WING KOREA) and used it about 4 months but just got tired of it. The newer ones I think have the carbonate mounting bases. The original ones had blocks of metal adding even more weight, and they were poorly machined on the bottom to mate up witht the hatch. When I tightened the base, it put two dents on either side of my hatch right below the glass. I think the #1 is okay, and the #2 needs a bodykit or at least lowered.