i would get the anti-glare (AG) hi-res panel.
i just ordered my new MBP with that option, i saw in the the store and it was impressive. i'm upgrading from a C2D Macbook Pro 2,2 with the AG display as well, but lately i have been feeling constrained with the 1440x900 resolution.
YMMV, but this all my opinion. i can't stand glare.