Vertical messenger bags?

Hey guys,

I know, right, yet another bag topic. Sorry. Just that all the Timbuk2, Incase, ... don't usually make vertical bags.

I have had my messenger bag from Next for years, but it's starting to fall apart a bit. It's a plain vertical messenger bag just large enough to hold my 13" Air and a couple of other things. One additional pocket in the front (charger, cables, those sorts of things) and a handy little pocket for pens and such.

I just cannot find a replacement, ideally in the $40-80 region (this Next bag set me back about $50).

Vast majority of quality messenger bags are those huge horizontal ones, I simply do not like the ergonomics of that, though they usually look pretty darn good.

I am looking for something like this one (quality and construction-wise), well except for the horizontal orientation, also it can be a bit smaller. It can also be a hipstercrap like this, though I would prefer something in between these two in terms of quality. Here is a picture of my Next bag.

Hope this make sense. Thanks!