Thanks for all the input. I think I want to stay with wired mice. A wireless keyboard is one thing, but there is nothing worse, than a mouse with a dying battery jittering all over the screen. I was planning on also getting a logitech gaming keyboard but I have decided to go with the apple keyboard without the numpad so it can fit in my keyboard tray.
I totally see your point. I use my computer for hours every day, and I am an intern and training to become a server admin and IT specialist. so that makes me think that I shouldn't think too much about the price. But at 14, without a steady income numbers like that scare me. But I have saved a few K over the years. I've pretty much narrowed it down to the 518, the M500, and I think I'll put the Revolution back in the running even though it is so expensive. What also bothers me is that I can only get it for mac, or pc, but I'd like to be able to use it later on, on my high end custom built computer.