I bought the 13" TB version of the MBP. I love it except for one thing: battery life. I've done three battery cycles and haven't gotten more than 6.5 hours on a charge. That's just not enough—especially coming from a 2013 MBA that still gets 10-11 hours on a 3-year old battery. Now I need to decide whether to replace the "tMBP" with a 13" MBP (no-TB) or a 15". I love TouchID, especially with 1Password, and although I'm not using the TB much yet, I can see its potential. And from what I've gathered, the 15" gets about 8 hours of battery life. I'd prefer more, but think I can live with it. This makes me lean toward the 15". On the other hand, I'm concerned about the heavier weight of the 15". My primary use for this laptop is travel and the couple days a week that I work away from my main office, so portability is important. I can see from the specs that it's actually pretty close in size/dims to my 2013 MBA, but it is one pound heavier. Just wondering if anyone out there has made the move from the 2013 MBA to the 15" MBP, and what you think about 1) battery life, and 2) extra weight.