Assuming price is no barrier, why would you skimp on the part of the computer system that you interact with the most/the number one productivity enhancement you can get? I love my 30" ACD. The 2 USB and 2 FW ports are enough for my needs, and I have no desire to hook it up to a game console. Anyway, if those kinds of things are important to you, you can always get a Dell 3008WFP, for a little less than the ACD.
At the very least, I suggest getting a couple 24" screens (normally not found in your typical B&M electronics stores such as BestBuy). Running a MP on a single small size (<24") screen is just silly, given the opportunity to multitask that the MP offers.
I completely agree with you, and When I purchase my mac pro in a few years, I definitely will go with 2 ACD, but if price is a concern, I would for sure go for 2 samsungs. They are great monitors. I also understand what you mean by having no desire to hook it up to a game console, but maybe down the road you may need that option. You could even hook up and HD receiver to a bigger 24in monitor that has an hdmi/dvi in port. I like to have the options just in case.