If you can't find the brands the others have mentioned, at least look for natural fibers, sable.
For 1/32 scale, I use some smaller brushes, sable hair, but off-brands that I've picked up at hobby stores.
I had a W&N Nr 2 for painting larger-scale figures, 1/20 or bigger, using acrylics, but I have misplaced it somewhere.
It took me a while, through trial-and-error and talking to others, to realize that a small brush was not as good as a larger one. I looked at the small brush--like a 10/0, 5/0 or 00--and figured that they had fine points, so they'd be easier to use. That's true with enamels, when working on scale models, and true with oils, too. Both enamels and oils remain wet and thick long enough to deposit the paint on the target. But I found that with acrylics, the amount of paint the smaller brush could hold would dry in the time it took to pick it up from the palette and apply it to the work. It was almost counter-intuitive, I think, is the best way to describe it. The larger brush holds more paint, like the ink in a fountain pen does.
I may be babbling nonsense now and the veterans can correct me. It's just how I describe my own path to learning what I know.
Prost!
Brad
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