hey all, i'm going to eastern europe this spring and want to get a good bag for toting around guide books, water bottle, camera, etc., while i'm touring the sites. i hate wearing backpacks!! i want something durable and very roomy and ideally on the cheap side, and not something too flashy that will mark me as American, but it would be great if it was an all-around decent bag i could use for schoolbooks, too. any suggestions? thanks!