currently have a a disc bike, a canti bike and a V brake bike...order of like....disc, v, canti......I for the life of me can not get the canti's to feel good no matter what and have tried two different sets ie tektro and diacomp. 3 different bike shops canti (see what I did there 
)either.....
I am guessing that you have tried the Salmon pads. If not I would try these on your cantis. There are also better working cantis available.Yokozuna sales a remake of the mathauser finned salmon brake pads that I used on my touring bike years ago.