I wore out a G15, forerunner of the 510, and am typing this on a G510. My only complaint is that the letters and numbers are average/small size and my old eyes don't see them very well. The lighting is very good. You want red, you can choose red, or any other color of the spectrum. I like green at night and yellow or white during the day. The 18X3 macro keys are awesome.
I don't use them for gaming but have internet shortcuts set up on most of them.
Hope this helps.
P.S. The new model is the G510S and costs about $20 USD more then the original 510. Newegg still has the 510 and currently it's $99, but shop around; someone must have it on sale.