I was given a TC Polytune clip on for my birthday, a very generous gift as I would never spend $50 on a clip on tuner (Even if it's the best tuner I've used). Along with the tuner I got a code for the tuner vst, it's very good! Is it worth $49? NO! But if you can get it for cheap/free, I'd highly recommend it. Accurate, fast and easy on the eyes.