In all fairness to Kabooki...
There's really 2 camps for the import scene. The first is exibited on this board, mostly function over form, with emphasis on clean looks and practical mods.
The 2nd camp is the F&F influenced, "ricer" crowd, who mod their cars for looks and little to no go.

So while I definitely hate graphics, big wings, etc, there's a market for them, and most people who aren't into cars that comment on them, tend to like the blinging sh!t more. Take my ex for example, who couldn't tell at all that I had lowered the car 2.5" and painted my sideskirts. The only thing she noticed was tint. So outside of the 1st group of practical tuners who prefer clean looks and function, is mostly "wow that looks fast, what a great car" mentality.

Ok that was a bad example, but you have to be fair to people with different tastes in "mods."

To answer the rim question, I'd say get a set of clean 15" rims. Since you're new to the black rims crowd, maybe a nice set of silver rims? Get something you like, not what others like. I'd say 15's though, as they're much more practical for our econoboxes.

Ok I'm done. Later on.