Perfect bag for 3 weeks in China?

[Seekwence]

Hi everyone. New to the forums and have been searching through reading about bags (both here and browsing Amazon).

I will be going to China this summer for a few weeks and looking for a great bag for my Nikon D3000 with 18-55 and 55-200. I want this bag to serve as my airplane carryon as well as a general daypack while traveling (book, accessories, random travel docs, etc)

Thanks in advance for your input!

 

[wescobts]

I'm a big fan of Domke, F2 and the F1x.