Hello to all. I will be purchasing a new 20" iMac in a month or 2. I am currently running my PC with 2 monitors and don't want to ever go back to a single monitor (it's sort of like having power windows and locks in your car, once you have them you don't want to go without them), I am looking for recomendations for a good 2nd monitor to go with my new iMac. I have heard of monitors that don't work with Macs. So any advice is greatly appreciated.Thank you all in advance.