If you can't get to a store that carries everything, Check out a professional Review site.

I always read Tom's Reviews first.

http://www.tomshardware.com/graphics/displays/index.html

( personally own 2 Samsung Syncmasters. weighed out price & performance) 17 & 19
My Next Upgrade will be Pricey....Cintiq: http://www.cintiq.com/21UX.cfm

Good Luck & have fun.
Let us know how you make out.

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Ockham's razor- It's that simple