I voted for Polk. But in all honesty, I like Infinity, JBL, and Kplisch just as much.
But one thing I would like to point out is that, in order to differentiate from the big box retailers, I think the Audioholics store should concentrate on the higher end lines from these brands. There is a discernable difference in sound and build quality between the everyday kplisch line and the Kplisch reference series. The same thing goes for the Polk, Infinity, and JBL brands.
Another nice thing about getting the higher model lines from these brands is that they represent very good bang for the buck value for your money.
For my money, I would rather get a top of the line model from Polk, Infinity, JBL, or Kplisch, than to get a bottom of the line model from B&W. Companies often put their best design and craftsmanship into their top of the line models, regardless of a brand's perceived standing among audio enthusiasts. Just my personal opinion, B&W doesn't really start to sound good until you get to their top of the line 800 series, which cost CONSIDERABLY more money than their lower lines.