Bag to take on 2-week trip?

My travel bag is Speedy B 30 in DE hands down. It is light, foldable, spacious --- can fit camera, wallet, cosmetic bag, 2 mobile phones, and also random purchases (I once put a pair of sandals inside!). And for me, it is rather low key because it is darkish, and the DE pattern is not as obvious as the monogram...