The site is ugly and unusable, but the bags are absolutely stellar. I have the Pro Ultimate and I use it with my 17" unibody Macbook Pro in a Booq Viper ballistic nylon sleeve. I used to use top of the line Booq bags and ditched them entirely for the Ultimate Pac Bag. It's 3-4 layers with truck tarpoline liner in the middle. The fabric is Dupont Cordura Plus, which is the best you can get. The bag is very very waterproof. I've been caught outside biking home in thunderstorms with torrential downpours and I got home with the contents of my bag completely dry.
If you get one of the two biggest models, opt for the secret compartment. It's so well hidden that I had to contact the company to find out where it was on the bag.
If you anticipate weight, definitely get the x-strap option. You can carry a small child or medium-sized dog comfortable in one of these bags. See this image: http://www.pacdesigns.com/images/offtoworkpac.jpg
It's not a cheap bag, but I have no doubt that I'll have this thing 10-20+ years from now. It is rock solid.
Every day for the last 4 years, I've carried a Thinkpad around NYC in this thing.
It quickly converts between two different configurations: (a) comfortable and back-friendly double backpack strap and (b) a more professional-looking single shoulder strap.
Has a padded laptop compartment, a main compartment, and two big external pockets.
Only complaint is the latches are plastic and have finally started to break. I love this backpack enough though that I'll probably take it to the tailors.
[1] http://www.crumpler.com/CA/Laptop-Bags/Laptop-Messenger-Bags... [2] http://www.crumpler.com/CA/Laptop-Bags/Laptop-Messenger-Bags...
I've got a 17" Dell so big, you could hit someone over the head with it and kill them. This was the only "slim" case I could find that it would fit in easily. I'm hoping to move on to a 17" MacBook Pro later this year and this case should work for it as well.
http://www.jackspade.com/shop/product.php?productid=20355...
I would like to get a skull iron-on patch for it.