I can fully recommend HP EliteBook 8570w
for the use together with debian wheezy.

It works completely flawless, although it needs non-free packages:
firmware-iwlwifi:amd64 and (optionally if fast 3d acceleration needed)
nvidia-kernel-amd64:amd64 nvidia-glx:amd64

If you want to install over wifi, make sure to have
firmware-iwlwifi:amd64 on an usb stick.

Otherwise, I recommend to follow the tipps on
http://www.saotn.org/installing-debian-gnulinux-70-wheezy-on-hp-elitebook-8570w/

The laptop is amazingly fast and completely silent in typical
operations. On heavily CPU operations (compiling big stuff)
the fan starts but has an non-bothering noise.

Suspend-to-mem and suspend-to-disc works fast and robust.

The battery seems to last 3-4 hours.
(I will do more tests there later)

Full HD acceleration seems to work. Using driver vdau* Elephants Dream
HD plays flawlessly with about 30% CPU (of one those 8 cores).