The very first mine that I used from the 10 packs in my ACME Rollerball, was Committee. The mine writes badly and scratches and stutters, as if it were dry. I was completely disappointed, mainly because the reviews for Topball mines are very good.
Then I tested the other nine mines. These glide easily over the paper - not quite as good as the original mine, but the tailor-Topball mines are also much cheaper.
