Good grief, they're monsters. The Asus is 1920 x 1200 pixels (WUXGA+), the Acer is 1920 x 1080 (WUXGA) so both fine for HD movies. The Acer is a (maybe) a bigger hard drive and faster CPU: I see 500GB and 640GB listed under the same Asus part number, so I dunno what's going on there. I have played with the previous version of the Acer and quite liked it.
Does the Asus have a DVBT tuner?
Gosh. a 4kg notebook with a subwoofer 8-). How could one resist??