just been there… needed to get something quickly to carry around my new 17" workhorse.
In order of preference I was looking for : protection, comfort, appropriateness(it needs to give the right impression).
Ended up getting a crumpler ‘sticky date’, but would have loved to have found something more unique, less crumpler, more practical (rain can get in either side of the top flap), but the quality is amazing and protection really good.
It also comes with an inner padded sleeve.