PS3 will be able to get up to 1080 though, but at the moment, I heard reports it couldn't with most TV's.
I do agree that PAL, is slightly better than what Americans get normally, but your a bit out with the FPS.
PAL outputs usually at 25FPS in broadcasting, but can reach 50fps, while I believe NTSC outputs 29.7fps broadcasting, but can reach 60fps, i.e with a game console like mine can (Even though its a PAL TV, it supports NTSC signals)
I do notice differences with HDTV signals from TV's I see in shops, but mostly in overall quality of the image, especially on the bigger/clearer ones. But I'm guessing thats most likely because we have a rubbish TV compared to the widescreen ones they sell in shops
not because its HD ready and the like.
Its about the same jump from VHS, offering 250 lines at 25fps, to DVD which offers a much higher 480. So, yeah, a difference would be noticable somewhat, with a good set, and quality cables.