Hello I'll be buying one of the models above but I can't decide which to buy. The main difference concerning me is the build. The S540 has a metal like case and perhaps a stronger hinge I think.
The confs are:
S540 - i7 4500U (2 cores, 1.8 - 3.0 GHz, 4 MB cache), no CD, AMD Radeon HD 8670M...