My favorite wheels are the Rays Gramlights 57FXX, which I have on my car. I requested the silver-colored center caps with raised lettering (instead of the red center cap that comes defaulted) with the gloss black coloring of these wheels - I really love how perfectly (IMO) concave the 'flatter-faced' (not 9" + wide) version of these wheels are, and how well the center cap works with the wheel to make it 'pop.'
Here are a few poorly-lit images of them on my car -
My 'other' favorite wheel for our car would be the WedsSport SA10-R (especially with the blue finish), although I'm not a fan of the center caps that come with the wheel (nor the absence of any with it, as it just leaves a gaping hole.)