It really all depends on how you're going to use a bag with your iPad. If you're constantly taking it in and out of your bag and doing long trips, being on an airplane, and a general road warrior you need something that stronger and Built well. However if your at school or in a dorm and you're just carrying it and you're not doing any damage there's no reason to do any more than a case logic. They are great bags.
Yup. I looked at all the expensive bags in person (went to Nordstrom, some tech boutiques, etc.) and they didn't really do it for me. I'm not a big fan of messenger bags or those vertical shoulder bags, so I was pretty much looking for a briefcase or attache. I was looking for something to carry the 13" MBA + iPad 2 + Notepad + Accessories, so full-size briefcases were a little big. It came down to a slim briefcase or an attache, and the Case Logic attache I linked a couple of posts up fit the bill perfectly - right size, great price, and good enough quality to use maybe once or twice a week and not on any "rough" treks.