Tania, I'd be interested in hearing a review of the Billy B. brushes after you take them on a test run. I buy detail eye brushes like they are going out of style.

I still have a few of the old MAC angled brushes, and I have found that washing them with a bar soap--the free soap that you get at hotels is perfect, helps keep the bristles pinched into a tight line.

Also, I randomly found these angles liner brushes, and I love them! The other brushes on that site are not worth it at all, but this angled liner brush is CHEAP, and a diamond in the rough:

http://www.aromaleigh.com/neslbrfaluta.html

Please post a review of the Billy B/ brush if you have time!