Well my rule of thumb is that the battery rating isn't going to count in my extreme multi-tasking for school work.
Thats like 5-10 websites, constant uploading and downloading and transferring files back n forth.
Not to mention when I am writing papers and taking notes, I will be using word processing and other functions.
Anyways, I figured if I get the DV7 with the 9 cell battery rated 5 hours, then with a standard power saving utilities and just keeping things to a happy medium, then I should get a good solid 2-3 hours of "Using" the laptop.
Then there is always purchasing a second one, but I wouldn't waste my time with a 6-cell rated 3 hours(=1 hour)
Even if the battery isn't a full 10 hours on the DV6, what ever its"using time" is, it will be twice as long as the DV7.
So pretty much if the DV7 had the same battery it would be an obvious choice of the DV7, because I could live without lit keys.
Pretty much what I want in a laptop is: Newest Tech ie: Sandy Bridge and 6570 gpu, then numeric pad, decent battery,
nice resolution, and nice keyboard/looks.
Luxurys would be: Beats Audio, Webcam, Infinity Screen, dual slot, back lit, and oversized mouse.
So I am like 90% leaning towards DV7tQE, leaving the DV6tQE with 10% because its battery probably isn't really that much more, which is the only reason to get the DV6 for its long battery, and without it, you might as well get the DV7 with all the bells, chimes and whistles.