It was was about 1/2 a dozen loose bristles across the 3 brushes.If they have loose bristles than their not quality brushes. And I pay more than that for just one brush.
I think there is a lot of room for brush preference. I'll change brushes and technique depending on the paint I'm using. I think a lot of it is what you've brushed in the past. There's a guy my age that is a pro painter and always uses Sherwin Williams paints. Give him a different paint, and he'll still use his go to Purdy that he always uses. Me, as soon as I see it's too stiff or not stiff enough, or doesn't release the paint the way I want, I'll switch brushes to one I think will work better. If I'm still not happy, I switch again. If I run out of brushes, I'll switch paints - somebody may be really good and really happy with that paint, but it isn't me.My dealer gave me a picasso. 2 1/2 angled oval bristles. Wasn't too impressed with it. It seems like it would be fine for detail/high end work, but for production you just cant beat a wooster.