FIFA 06 changed a lot from 05, they made the AI much better... still a bit too easy though...
they got rid of that stupid 1,2,3 thing they had in 05 where corners and free kicks pretty much instantly went to whichever button you pressed...
ball isn't glued to your feet either anymore
haven't played PES since the days of "International Super Star Soccer: Deluxe!" on the SEGA MegaDrive II