I like the TB better, but if you are outside in the sun a lot, you should probably get the Charge. The TB's screen simply isn't bright enough to handle the South Florida sun, but the TB allows data and voice at the same time and I tether a lot, so that is more important for me. Battery-wise, I didn't see any noticeable difference between the two (my room-mate has a Charge). For me, it came down to the solid feel of the TB and the fact that I have a paralyzed arm and the TB is much easier for me to use/type than the Charge. The curved bottom of the Charge made everything just a tiny bit more difficult for me, and i the end, it's those little things that make a big difference.