Get a cheaper keyboard. If you aren't going to get a mechanical keyboard, don't get an expensive one - it's not worth it.
I recommend a Microsoft Comfort Curve 2000, if you can stand slight ergonomics - it's extremely well built.
Mechanical Keyboard all the way. Logitech, Corsair & Razer make some good ones. I picked up my Razer BlackWidow Ultimate at Best Buy for $54 because someone marked it as "CLEARANCE" for half price. I win.
Otherwise, like DarkSable said, Mechanical or something cheap.
Whats the difference between mechanical and non mechanical?