I have several, but only use the 212, 182, 187 and 188 on a regular basis. The 191 is ok though leaves me a little streaky... and the 129 is too fat, though I do use it a little I suppose.
My 187 is GREAT- it NEVER sheds on me (perhaps a hair or two in every 10 applicaitons), and the 188 is just as good! These two keep their shape, do exactly as they should, and behave beautifully! The 212 is also wonderful and is another must have brush
The 182 is a brush I simply cannot live without. However, that being said, I have had issues with mine!! As another poster said... it sheds like a mofo lmao! I actually had another one before this one, but had to get it exchanged because it was even worse than this one! It's not so much SHEDDING though- it's the hairs which break (which saddens me as the brush is no longer as effective then!) I have used mine for about 3 years now though (and it isn't in great condition any more.. what with hairs breaking all over the place...) so I bought a new one at the mac f&f sale
Fingers crossed that the new one doesn't do the same!!
P.S. And I wash them carefully with baby shampoo and conditioner!!!