Messi for me.
Its easy to see why people prefer Ronaldo but there is not many areas where he can be considered better than Messi.
Ronaldo is better physically, more of an athlete. His left peg is stronger than Messi's right and Ronaldo is stronger in the air. A year or two ago I would of said he was better at free kicks but to be honest Seb Larsson is better than both of them at free kicks recently.
Surely if you were playing you would rather have Messi in your team than Ronaldo?