I now mainly use Da Vinci Meastro brushes,I find they are far better than W&N and last longer.
I have also tried Rapheal, but these didn't perform well.
I do believe that as with all things, there can be bad batches. I recently bought 2x size 0 Da Vinchi's
1x has performed very well, the other keeps splitting, I can point it and use it, but after 4/5 strokes, it yet again splits.It's time for the bin :' ( I should probably send it back for a replacement )
Use whatever you are comfortable with, just make sure that every week you wash them out thoroughly with either a brush cleaner soap or shampoo and repoint .I have some from 3 years ago.