Hello, MacRumors I have been looking all over, reading every article I could find, and asking everyone I could think of. I am majoring in Biomedical Sciences and Pre medicine. I am looking to buy a MBA and I am uncertain of what core to buy. I know that the i7 has better performance, but at the cost of battery life. This is probably one of the most first world problems I've ever had, but I don't know what to choose. My dad said go with the i7, since it's only 140 dollars. But I'm concerned about what others have said about battery. I will probably keep it plugged in 75% of the time anyways. Most of what I do is keep tabs open while using office, but most of that matters about how much RAM you have. I don't really know what programs I'll be using in my major. I just don't want to buy the i5 and then regret not getting the i7, or buy i7 and be disappointed in battery. Thanks!