I recently purchased the SYS-Storage Systainer 499901. I needed somewhere to put a bunch of spare parts and random accessories. This seemed to be the perfect solution. As far as this primary function goes, it worked great. The only thing that I wasn't able to fit in there were the FS-Rapid clamps. They were too big. I guess you can't win them all. I do wish it came with more storage containers, but once Festool stocks them as accessories I will pick some up. The only real complaint I have is the overall size. The box is the same height as a SYS-2. The handle sticks up above and I thought it would be the size of a SYS-3. It was around a 1/2" taller. (I haven't actually put a tape on it) I have homemade SYS-Ports and this will not fit in the designated spot for a SYS-3. I have to put it in a spot for a SYS-4 and it looks very small in there. Perhaps I've placed my standards too high, but this is a small detail that it seems Festool always accounts for. Everything always seems to correlate. I think the handle could have been slightly smaller, making it even with the top of the SYS-3 or it could have been retractable inside the box. I understand that there is a hollow space below the handle to accommodate stacking of multiple SYS-Storages. This would still be achieved with a handle that popped down out of the way. Overall I'm very happy with it, but this minor detail just bothered me a little.