I guess the HP is the best-buy since it has both an i5 processor and a dedicated video card. So, is this really the best choice?
THe notebook will be used primarily for browsing the Internet, working in some Office suite, so I don't need top-notch gaming performance. What I do need is stellar battery life. Which one has the best battery life? I haven't been able to find any information regarding that, but they all have 6-cell batteries.
I think ( don't know for sure) that the I5's have integrated graphics, that will run until the more powerful discrete video card is needed, this is just a guess though. So you would get more performance when needed, but more battery life when you don't.