Keycap letters fade

My Inspiron 8000 will be three years old in a few days.  Thanks to the warranty, I have replaced the keyboard three times, that is, when some of the letters had become so worn that they were invisible and made typing difficult.  I'm certainly grateful for the warranty but do wish that I didn't have to endure the fading letter phenomenon every six or eight months.  My desktop, by the way, is older and has been used much more, and yet the letters have faded only slightly, almost imperceptibly.

 

Now I'm think about buying another Dell laptop.  Can someone tell me if the keys also fade on later models than mine or if Dell has found a solution?   I'd like to get another Dell, but I'm really put off by the keyboard problem.

 

Thanks for any advice.

 

Rita