Simple, compact "gaming" keyboard?

Hi, I've been slowly but surely piecing together my desktop setup and am currently using a cheap keyboard from goodwill until I can find a better one. Due to my small desk, I can't have a keyboard any wider than 15 inches. I don't need RGB or anything, just good response times and all the important keys (This one doesn't even have Fn or Caps lock) are all I need. Any recommendations?