Thanks a lot for all the input. Most of the time, I can live with 13t. I appreciate the reminder about IRD. I think I'm going to try out the IRD 'classica' for my everyday bike and I have enough cogs to rebuild the Winner Pro as 12-24 for fast riding. I concur with the idea of springing for the right one and taking immaculate care of it. I can make a good freewheel last.
-Many happy miles to you...