So my keyboard and mouse is now 6-7 years old, and i feel like i should get some new sexy stuff, i mostly play wow and hots.

First question, i've been looking at mechanical keyboards, but i dont know if its worth buying mechanical??
Am thinking blackwidow http://progamerreview.com/razer-blackwidow-review/

Second, i've been thinking about the Logitec G502 http://progamerreview.com/best-fps-gaming-mice/

Any1 got experience with either of them, can you recommend any of them?

Thanks