I know the sleeve/case thing has been done to death but I couldn't find much information about Colcasac's cases so I was hoping a few people would kindly tell me their experiences with the case, their opinions on it and whether they prefer another case. I am specifically intersested in how well it is able to be able to be carried around in a bag as well as how much protection it offers for example, can it protect the laptop from damage resulting for a fall etc. Also, what is the difference between 18.5oz hemp and 20oz hemp. I've narrowed it down to Colcasac sleeves because of their aesthetic and what appears to be quite a bit of padding. I did find the Waterfield bags appeared nice but were more expensive than the Colcasac and didn't seem to offer as much protection and the Incase nylon sleeve is the same price as the Colcasac ans seems to offer protection but I've heard of cases where the zipper will scratch the laptop. Any help would be appreciated.