They're definitely solid boards. I've got the backlit USB version, honestly these aren't missing out much given how inconsistent the backlighting is.
I game on mine all the time without issues... but I wouldn't recommend it if you swap ctrl and caps lock. I've found if you swap them, caps lock will randomly turn on as you're typing. It's definitely some key combinations on the right side of the alphas, and as a fix I just set them both to Ctrl keys. But if you regularly use a program with Ctrl combinations on the right side it can be a problem.