i've got a lot of MAC brushes, i've always been happy with them - no shedding. recently i wanted some extra brushes but didn't want to spend too much so i bought some japonesque ones. i was pleasantly surprised, they didn't shed and there are a few i use everyday now. i'm also going to try out brushes by coastal scents - their eyeshadow palettes and makeup brushes got really good reviews and they are dirt cheap, so i think it's worth a try!
all brushes might shed a bit on their first wash but shouldn't really after that. i always wash them as soon as i get them to get rid of anything that might want to come out. after that it's usually fine!
oh yea, i just remembered. these got really good reviews too. just a bit cheaper than MAC. but i think i'm gonna try coastal scents first.