Hello owners of Speedy 25/30 Empreinte. I am currently on the fence about a Speedy 30 Empreinte. I have seen how some empreinte bags have softened up and sagged through time and I suppose it will happen to the speedy too. I am wondering how yours has held up? Does the top part cave in as seen on some of the Totally and Lumi? Please post pictures if you can. TIA!