Excerpt: Easy to use. Much better sound quality than the previous model and much better memory. Also, the new model uses batteries which is much easier than having to charge in the computer. Very valuable tool and it is small so easy to travel with. You can plug it in to the sound system as well if your bandmates don't believe you that part A of the song repeats before the bridge and you need to prove it to them.
Summary: I absolutely love this thing. It's got damn near everything one needs to practice or learn songs with, and it's a hell of a lot easier to carry around than a laptop or a tablet. It's clearly got a bunch of cool functions, but my favorite is the looping tool. It's great for laying down backing tracks to improvise over. Obviously it's great for composing as well.