I'm once again on the fence about trading in my TB version for a non-TB. I actually have both in my possession now and have been using the non-TB one all day and it's just so nice not to have to worry about battery life. I do feel like the non-TB model is the better overall machine as the 54.5Wh battery is a better match for the 15W CPU than the 49.2 Wh battery is for the 28W CPU. That's the main reason for the dramatic decrease in battery life in the TB version IMO - just too little battery for that level of CPU.