Hey guys, I bought my 13" MBA earlier this week and I've been loving it so far. I'll be going to school during the summer and I was looking for a good messenger bag. I looked through some of the posts here on MR and I found MANY suggestions. Ultimately, I narrowed down my choice to Booq Taipan Shadow and Waterfield Cargo owing to my requirements (enough compartmental space, open back pocket for attaching to carry on luggage, light). Now I really like the Booq Taipan as it seems to offers similar features as the Waterfield for less than half the price, seems to have enough compartments, and has Teralinq to track your lost bag. As for the Cargo, I have heard quite a good number of things about Waterfield's products. I myself have their Leather wallet and I can attest to the quality of their products. However I have two major concerns. 1 - It seems I'll need to buy their Sleeve case if I need to have protection for my laptop when placed inside the bag. And with that in place, I don't know if I'll have enough space for my notebooks and journal in the only main compartment that they have. The total cost with the sleeve comes out to be $250 at least. 2 - I have already ordered another sleeve for my MBA, by Mintcases. Haven't recieved it yet, so don't really know how protective it is. But I don't want to take any chances. This is why the Booq seems to be the better choice for me, because it already comes with seperate compartments, and it has a flush padded compartment for the laptops. What do you guys think? Anyone who has used either/ both of these, your input will be much appreciated. Thanks in advance!