I have currently SONY G400 for about a year and love it.
Have NEC FE950 as well, which is worse in all aspects. (Had NEC FP950 as well, which I returned.)
At other location have Samsung 17" IFT (?), and I like it a lot.
Out of these 3 SONY is a clear winner; didn't see the Samsung 900nf, but if is it same or better than my 17" model, the decision which to get may depend on personal preference.