Trackpad is great, battery life probably a bit less than os x, Im using a mid 2012 and get 3 hours, want to upgrade to the next model with the 9-12 hour life.
Em...that's just half of what OS X can do. I have the same model, but my laptop can last at least 7hours in a coffee shop.
This is the 11" mid 2012, 13" has larger battery -- I was lucky to get 4 hours with os x when I first bought the machine, the battery is now 4 years old and gives me 2:30-3 hours under latest Ubuntu.