Only thing I'll say on De Gea is having obviously watched every United game this season I can all but guarantee no other keeper in the league has pulled off as many top quality saves as he has since the turn of the year and that is something I can be quite confident in saying despite only seeing highlights of the other 19 teams in the league.
Obviously it gives no indication of the 'quality' (which is subjective anyway) but looking at the stats, De Gea has only made 30 Premiership saves in 2012. Whereas the first other player I looked at (Krul) has 50, more than 50% as many.