Hi I'm looking for a haversack camera bag, may I know do you all have any recommendations? Basically I will use this bag to carry my digital SLR camera body, a mid-range f/2.8 lens, a wide-angle zoom lens, a prime or macro lens and flash plus some space for personal stuff like stationaries, PDA, storybook, water bottle etc. And I don't think I want something too big whereby it's like a backpack and neither something too small else wait can't carry much things. Budget wise don't think I will spend a few hundred dollars for it. And of course it must be durable too. Thanks.