To be honest I think some people on this forum are looking at things the completely wrong way.
How can you say that pes will ALWAYS be better? things do change. People need to realise that theres no point being almost tribalistic over it, your consumers, you want to buy the best product you can, simple as. Are you trying to say, for example, that if pes 6 was universally slaughtered by the gaming media and fifa07 crowned the new king of football games that you'd still be sitting here saying how crap fifa is and that pes "rulez" no you wouldn't! you'd complain about pes being rubbish and go buy fifa.
the simple fact is is that fifa is evolving, vastly improving. I at least play both games every year extensively and, yes, pes has been by far the better over the last few years but this years fifa is an extremely playable football game. Lets not forget as well that in some areas fifa is lightyears ahead of pes, in terms of presentation, sound, atmosphere etc.
my main point though is to just chill out, decide which games you want to play and go do it. its only a videogame after all