So, this is a bit boring, but there have been lots of threads about how some items bobble/pill really badly and this is something that really bugs me.
I really wonder what determines how badly something bobbles/pills - is it the quality of fibre used, or the way it has been knitted, or a combination of the two.
I have had jumpers made from wool that have not pilled or bobbled at all, while at other times it seems to happen nearly immediately.
One of the worst was a beautiful and very expensive cardigan I bought in Jigsaw a while ago - it's made from Alpaca, and it's very, very bad - I have to de-fuzz it before every wear.