I like that it has a travel case, which is quite convenient. I probably won't use it myself--when you travel carryon only, space is at a premium, so while this isn't too large, it's still bigger that I would be willing to bring on a flight. If you travel with a bigger suitcase, you may think differently.
I also loved that this came with a whole bunch of extra toothbrush heads! Yes! My other toothbrush only gave me four. Also, I liked that the heads were slightly wider than the other e-toothbrush I'd had. Also, my gums tend toward the sensitive, and this brush didn't hurt them on any setting, as the other toothbrush did. (Does this mean this one is too soft? Dunno, but for me it is an improvement).