I have been there, and use them all the time. I guess what I am wanting is the specs for a monitor. What is good? What is bad? I am new to the whole monitor thing.
Any of these will probably be better than your standard computer media speakers, however remember......in most cases you get what you pay for. For an extra $100, you could pick up a much better pair of monitors. However, based on the 30 minutes I looked at stuff, I'd go with the Tannoy's or the M-Audio DX4's. Hard to say though without hearing any of them.