Reasons I picked polished:
1-they cost less.
2-I heard too many flaking stories.
3-they cost less
4-if they scrape against the curb, its inexpensive to fix.
5-if they get bent, its fixable
6-they cost less
7-for my fullsize truck I got a good deal on a non-paying customer order. $1,100 for 18in Centerlines with tires.