trager magnum is good for protection. when i had my compaq x1000 it was in the case and fell from the top of our bunk to the floor. no dmg at all. it has a hard cardboard insert on 3 sides for added protection.
sfbags.com makes an EXCELLENT sleeve, but it's kinda pricey.
timbuk2.com was the bag i was going to get until i settled on mysetup which is a jansport messanger bag with trager magnum (w/o hard inserts) as a sleeve.
I just got the expandable computer case from target.
Made by eddie bauer.
Nice looking case.. fits the 8600 like a glove. I had problems finding a non backpack that fit at staples and office depo. This one was a little exspensive... 80 bucks.. but it has a 15 year warrenty and good features, looks very sturdy