I'm neutral with the argument. I use both platforms equally for freelancing and games. I do enjoy pc gaming yet I like to stay some what connected to the design world with my mac. Different people I work with have one or the other so it helps to know both in my opinion. I'll be a happy camper...
Have you checked out HP's offerings? I personally use 4 of their ZR22's for Photo, Design and Gaming. The newer HP ZR2240 is great for the price! It also come in 24" and 27" versions.