I love that they offer sooo many different sizes! They are relatively easy to use in general but for something like disk-o-tape it can be tricky - some people have trouble learning how everything works without having someone there helping them. We're using this with our employees at my work to archive important documents (ie old resumes) into their own drive space instead of simply deleting them every time we need space for a new document. The fast shipping speeds are great! They send out notifications when they have shipped your order to let you know that it is there. I would like to see an option for tracking orders in house once they ship them. I do not like having my emails open all day long waiting for shipment updates. Shipping times can be long. If you need your product quickly this is the way to go. We use DOTT's services for our supply chain needs.