best laptop for fedora (or Linux, in general)

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http://forums.fedoraforum.org – Hi, I'm currently on HP G32 running fedora 16. I haven't had a very satisfactory battery performance with fedora (I've only been using fedora) with all of my past hardware. E.g., my acer netbook runs around 4 hours on windows 7, but only around 2 hours on fedora. The fujitsu lifebook I had only runs less than an hour on fedora, but around 2 hours on winxp. I don't know if there's a certain hardware that I should be looking for, that runs well with the linux drivers (I've read in some forums that I should avoid sandy bridge or optimus hardware). Do you know of a laptop brand/spec that (HowTos)