Christian,
Check out Tortuga Backpacks: http://www.tortugabackpacks.com/collections/travel-backpacks
They seem to be the UL/Lightweight Urban Traveler's choice.
Small cottage manufacture, with a focus on Urban travel, minimalist functionality, and light weight.
I have pre-ordered their day pack and I am looking at the Tortuga Air for trips overseas in the future.
Only issue would be that the Day Pack is scheduled for release in July.
Check out their story/history about why they decided to create their own gear….reminds me of UL Cottage manufactures who were frustrated that the gear they wanted to buy didn't exist, so they created their own.
They pointed out the short comings of using backpacking gear for Urban travel.
Anyway, hope this helps.
Edit: I am sorry that I failed to notice your budget. Unfortunately, these will be too expensive for you.
Tony

