This tuner is feature-packed and is so easy to use. Honestly, I only need it for simple tuning of a 4 string bass, and I love the fact that I can connect it inline with some effects pedals for tuning on the fly. I recommend the metronome upgrade for its ease of use and the 4 different voices available. I believe that this tuner is future-proof as well, with all the available upgrades, "sweetened" tunings that you can download and share, firmware updates and it will tune practically any musical instrument! Try it, you won't be disappointed!