It's very robust unit and works like a dream. It also looks very cool in all black colour. Battery can be changed easily, if you don't like to use power adapters. Kudos for two outputs and switch for buffer on/off. More expensive than the regular TU-3, but this is clearly upgraded version from the classic tuner!
Edit. This thing eats batteries like a mf. Buy a power adapter if you wish to avoid changing the battery every other week. Minus one star for that. Last battery lasted less than two weeks!