what rims should i get ?CLK 430
 

I am looking to get some new rims for my 2001 clk 430 BlacK (but it looks navy blue). I have 17 inch Amg wheels now, 8 in. (rear) , 7 in. (front). Loooking to upgrade to 18 or 19 if possible. the roads in CO. are bad, so not to sure about 19.
What looks the best guys, in your opinion??