I will have to bear that in mind next time I'm in the States. Unfortunately, Reedy brushes are not too common in Hong Kong.
The 'choice' brush for power and comm life is the GM 03 brushes. I can easily get 20 runs on a 11 turn and then the comm will clean up on the first pass on the lathe. There are brushes which give more power but they are quite harsh on the comm!