Depends a little on your volume, which I think is what Yaah may have been getting at. A few hundred slides a year is a far cry from a few hundred slides a day or a week. I suspect most of us are left out of the loop when it comes to obtaining this kind of hardware, but in general you want to know how much space you expect to fill up in 1, 5, 10 years, and where your storage space will be. It's surprising how heavy that much glass, densely packed for storage, really is. That will give you a better idea as to whether it's worth it to get a "full size" cabinet, or smaller stackable cabinets, metal or wood/cardboard, etc. Invariably there is eventually some water exposure/damage, which means rust stains with metal or possibly collapse with cardboard, and plastic has a bit of a tendency to eventually crack. I've seen a bunch of places whose storage rooms are filled with mismatched cabinets, some full size, some small, some cardboard, and so on -- it does the job, but doesn't look very nice and I think is more of a pain when re-arranging or moving to a new storage area as compared to a more uniform and consistent set-up.