Depending on where you live because both use the same panel ... the Asus VG248QE or the BenQBenQ XL2411Z. Minor differences.... BenQ cones outta the box w/ better color balance buyt suffers from ghosting which is noticable to some but not all gamers.
Make sure to download an ICC profile from TFTcentral
Also you can add motion blur reduction with tasty strobelight.. works on the Asus, not sure about the newer BenQ
http://www.blurbusters.com/easy-lightboost-toastyx-strobelight/