axis mods, gloss black with polished lip

I saw these and I really like the black with polished lip and they are not too expensive but I was wondering if they have these anywhere in 20's? Or is there a staggered setup available for the 19's?

Another question I have regards those who have these wheels and have chosen 19's in the front and 20's in the rear. Have you had any problems?
Thanks

 

Come on, I know there are a bunch of guys with axis mods on here. But just in general, is there any problem with running say a 19x8 up front and 20x9 or 10 in the rear?