There are certian parts of the computer that are best left to the person using then to be chosen and the keyboard is one of them. You have to feel comfortable with the layout and design of the board so a hands on tryout at your local Best Buy is a prefered option.
Cooler Master CM Storm QuickFire Rapid SGK-4000-GKCL1-US USB or PS/2 Wired Gaming Mechanical Cherry Blue Switches Keyboard
RAZER Black Wired BlackWidow Mechanical Gaming Keyboard
Tt eSPORTS CHALLENGER Pro Gaming Keyboard Fan Cooler Black KB-CHP001US
A4-Tech G800V 1ms Super Fast Anti-Ghosting 8-Key Rollover USB PC Gaming Keyboard with Wide Palm Rest
Here are a few for you to look at and the price point of $70 seems to be where the good keyboards are.