Based on last season performance alone, I don't think Nani is the best winger yet as Malouda is edging him a bit. However Nani's emergence in 2010 has been very encouraging as he keep on going from strength to strength. His confidence is growing and somehow he has been able to find consistency as well.
Now if Valencia is good in consistency wise, just imagine when Nani able to find such consistency... I will take Nani any day of the week.