Aah used te use D'Orazio 11/50-11/28's (Set 17) which are superb on my Takamine 12 - They tune to 'concert' without being too heavy on the fingers and they ring like bells.

Unfortunately they are like rockin'-horse sh*t to get hold of - The one supplier aah had went out of biz and at the mo aah'm toying with buying them direct from Italy