Corsair’s K-series mechanical keyboards are some of your favorites for gaming, and for general use as well, and the Lux model of the K70 with full RGB backlighting and Cherry MX Brown or Red key switches is down to $110 on Amazon right now, a match for Prime Day. I use a different model of the K70 every day, and absolutely love it.
For $10 more, you can try Cherry’s relatively new Speed key switches, which requires less force and distance to hit the actuation point, making it perfect for competitive gamers.