I have my 15" Hi-res AG, and I absolutely love it! The silver bezel looks a lot more professional-looking, and still blends well with the whole look. The thin rubber black surround is a nice touch and balances things a bit more.
I calibrated my screen, and after putting it side by side on my girlfriends 2009 MacBook Pro, the colours are just as good! I'm pretty sure the glossy gives it that "placebo effect" to some people? The white balance pops more on the AG. My girlfriend hates the glossy look now, and girls usually love looking at mirrors right? Wrong. 😛
I think at the end of the day, not many people are aware of AG. I think it should be compared side to side, although I'm now noticing more people are hogging the AG demo's compared to the glossy ones at my local Apple store. I'm a semi-pro photographer, so AG is a must.