PAL vs NTSC ....well we waited twenty to get colour because of the "need" to get something better than NTSC.... aaagh!!!
I have to say PAL is better because of the true rgb colour etc and the lack of hue error. BUT that said NTSC is not that bad ....my Zone 1 NTSC DVDs often look very good.
BUT now the debate is irrelevant as we enter the era of HD digital tv.