Hi guys; I'm new to backpacking, but I'm heading to Europe in three weeks. I am looking for a backpack and a day pack; ideally I would like to find a backpack that has a detachable day pack.

Here are my requirements:
1. My weight limit on the airplane will be 50lbs for my check in
2. My weight limit for my carry on will be 18lbs (this would be my day pack)
3. I'm not doing much hiking so I don't need anything too fancy
4. I want it to be comfortable
5. Price is not an issue

Please let me know what you think would be a good backpack to purchase.

Thank you.