after borrowing a mates wcw backpack for a couple of weeks whilst my trolley was broken ive decided im going to get one as well as a new trolley there handy little things to have but im not sure which one to go for his wcw one was ok but not brilliant on flow control but then again it was a bit old and battered so im going to do a poll on which people find the best/ use any that ive missed please feel free to add