Good topic! I was actually going to post a similar question.
I am really undecided on whether to take a backpack or messenger/satchel bag.
What I have figured so far:
Backpack Pro’s: Much more comfortable to wear & can probably fit more into it. Weight is evenly distributed.
Backpack Cons: Easier for pick-pocketers & thieves to get into, don’t want to get in the way of other people wearing one, backpacks scream ‘tourist’.
Messenger Bag/Satchel Pros: Seems safer because you can wear across the body so you can see it at all times, easy access for wallet, water bottle etc.
Messenger Bag/Satchel Cons: Worn over 1 shoulder which can become uncomfortable, Uneven weight distribution.
What are peoples thoughts on this? What have others taken travelling & what has worked best? Would love to hear all opinions