Own the 200119 3-drawer Sortainer, uses bins on 60mm grid. Bins stack tightly together, next to impossible to drop a screw in-between bins. Recently, was looking for more Sortainers, came across the new one #577769. Reviewers glowed about the drawers being easier to open/close and noted it uses a new bin type, based on 50mm grid. Am really disappointed in the new Sortainer. The bins have a moat around them, which will undoubtedly catch dropped screws and who knows what else, and the bins themselves do not seat firmly into the drawer floor. Instead they just float around, ridiculously easy. Why did Festool think this was a better solution than the previous version? Looks like someone decided to commonize the bins between the Sortainer and Sys Organizer, and put zero thought into the effect on Sortainers. The only positive thing I can say is, the drawers are in fact smoother to open/close. Needless to say, the Sortainer and bins are heading straight back to the seller.