I just bought myself a Crumpler "The Cashmere Blazer" bag for my 17 inch MacBook Pro. I'm really impressed with the solid construction of this bag, tons of space inside, lots of pockets, the laptop sleeve well padded, very heavy duty shoulder strap with cushion, even an special strap that keeps the bag from flipping around when you have to run with the bag (ie catching a short connection at the airport). I'll report further when I try it out on a flight next week. I just have to be careful not to pack too much in there, or it won't fit in the overhead compartment of the RJ!