we have had problems with them.
fixing the hose stops the continuous problems of pulling them, but to be honest the old fixed jets worked 100% of the time for us, and the new ones that cost extra dont work 100% of the time.
we have to replace them intermittently and its a hassle and a cost that wasn't there before.
i think they offer an advantage to gardiners so they can mass produce the brushes and get people to pay for the added part
they don't offer an advantage to myself
i am sticking wth gardeners as i find them the most reliable and best overall. but i dont like these capsules