I''m looking for SB processor lappie wondering which is better (performance/price)

Acer Aspire AS5750G-2634G64 RM2899
Asus N53SV RM3699-200
Lenovo Y560P RM2999
HP dv6-4003tx RM3299

ASUS N53SV - 4 slot ram, extra 1 year warranty
Lenovo - graphic card non-switchable << is it a big matter?
Acer - good price, lose abit in gpu and sound system
HP - aluminum casing, bad reputation of software thingy

Asus:
http://www.notebookcheck.net/Review-Asus-N...ok.43709.0.html

Lenovo:
http://forum.notebookreview.com/lenovo-ibm...-benchies-6.htm
http://www.mobiletechreview.com/notebooks/...eaPad-Y560p.htm

Acer:
http://www.notebookcheck.com/Acer-Aspire-5720.10771.0.html

HP:
HP - Don't have much information about this product

Any advise???
Don't mind to pay more for ASUS if there is huge different
But somehow i see lenovo doesn't lose much to ASUS which is RM300 extra

*new lappie owner after CNY since rumor said the price will drop after CNY*