Ok, so i bought a new 13" with the 2.53 GHZ and 500GB hard drive. Now i saw the article here about the 15" getting the outstanding 8.5 hours of battery in real world tests. i have not opened mine yet and am curious on how long you guys are getting in battery life on the new 13", your opinions on it, likes, dislikes, the works. the more information the better. I got it with the free printer and $150 off of the 16GB ipod touch from a deal a local store called ABT was doing. this may all influence my opinion to keep it or not. i need one because i have the original 13" black MacBook and it dies on me every month or so and i cant have that do to the fact that I am a Computer Science and Psychology major and require the use of a reliable computer at all times that i can push the performance of. Thanks much to all that respond!