What difference between cooler master devastator 1, devastator 2 , and devastator 3?

[hfzshe98]

I saw the sale on devastator 1.. but.. when Google.. there r more which devastator 2 n 3.. the design similar.. but where the difference?.. the price also difference.. any suggestion for me to grab the keyboard.. which better.

 

[Aeacus]

Let's see; first the description,

Cooler Master Devastator
Membrane design: More durable, longer lasting, and pleasing tactile feedback when compared to regular keyboards. Easy-access multimedia shortcut keys: let you instantly adjust music and movies. LED back light (Press "SCR LK" to turn backlight on)

Cooler Master Devastator II
The Devastator II takes the best features of its predecessor and makes them even better. The keyboard has a crisp, mechanical response thanks to exclusive “mem-chanical" switches. The ambidextrous mouse features side buttons, on-the-fly DPI presets, and LED lighting. It’s a steal whether you're new to PC gaming or a seasoned veteran.

Cooler Master Devastator 3 combo
The Devastator 3 RGB Combo is the next generation of our popular gaming set. Featuring adjustable DPI up to 2400 and tactile keys for improved feedback, this is ideal for PC enthusiasts. And now with 7 different LED color options, you can customize your peripherals to match your hardware.

and now the specs:
Cooler Master Devastator: http://www.coolermaster.com/peripheral/keyboards/devastator/
Cooler Master Devastator II: http://www.coolermaster.com/peripheral/keyboards/devastator-ii/
Cooler Master Devastator 3 combo: http://www.coolermaster.com/peripheral/keyboards/devastator3/

When comparing the specs, the first Devastator only offered single LED color option (blue), while 2nd one offers 3 different single colors (blue, green or red) while the 3rd one offers 7 LED colors within KB to choose from. There's also a downgrade from Devastator 2 to Devastator 3 in form of USB connection, from USB 2.0 to USB 1.1.