Just a few things I wanted to say:
1. If you're looking for decent battery life, drop the quad-core. You don't need that kind of power, and it only serves to kill your battery.
2. Apple is not an exception in computer manufacturing - they have contracts with Quanta computer, who also manufactures some Dells and HPs.
http://en.wikipedia.org/wiki/Quanta_Computer
3. Notebook speakers are terrible by definition. Speakers that small just don't sound good. They will be decently loud, so you should be good there; just don't expect them to sound great.
That being said, I think a customized Studio 17 will fit your bill much better than either of those notebooks, and still take you under-budget.
This one's for $1344:
Genuine Windows 7 Home Premium, 64bit, English
Intel Core 2 Duo P8700 (2.53GHz/1066Mhz FSB/3MB cache)
17.3” Full HD (1080p) B+RG LED Display
3GB Shared Dual Channel DDR3 at 1066MHz
250GB SATA Hard Drive (5400RPM)
512MB ATI Mobility Radeon HD 4570
Slot Load Blu-ray Disc (BD) Combo
85 Whr Lithium Ion Battery (9 cell)
^You can knock the CPU down to a T6600 and rid the Blu-ray drive to save some cash, and still have a good machine.
Edit: Added link for Quanta