Should you play a certain golf ball based on swing speed? The short answer is... no!
Your swing speed varies based on what club you're hitting. For instance, your swing speed will be fastest when hitting a driver, but slowest when you're hitting shots around the green and putting. Therefore, golfers need to have a golf ball that works for all swing speeds and all of the shots you need to hit. @michaelbreed goes into more detail on the best way to find the best golf ball for your game.