these are two of my favorite bands and it's hard to pick a better one, but I voted for the Ramones since I love 20 albums from them and just one from the Sex Pistols. also, in terms of importance, the Ramones are bigger. 9 in 10 rock'n'roll bands that came out after them were affected by them. I agree that the Sex Pistols is more about starting a movement. they seemed to care much more about Punk than the Ramones.

but who started it the way it was were the Ramones. they did a concert in UK in 1976 that was the major reason for the birth of english punkrock. of course the guys in UK already had something in my mind but the Ramones shaped it the way it turned out to be.

about The Clash - I also love this band, and musically, this is the greatest punkrock band ever. just listen to London Calling and you won't believe what you're listening to.(though I prefer their first record)