Qusetion for all the experienced travelers, would it have been nice at some point in your travels to have a wheeled bag? Because I was looking at this bag. It's a wheeled backpack. It also has a detachable daypack. Also it's within carry-on standards. It won Oustide Magazine's Gear of the Year award:

http://outside.away.com/outside/gear/gear....action=showgear

It seems to have a decent suspension too. I am just curious, it's kinda expensive but I think the luxury of being able to decide whether to roll backpack might be nice.

http://www.ospreytravelpacks.com/pac...0/description/

Please give me your feedback. Thanks!

Oh yeah, if this helps I plan on doing 3 1/2 months in Eastern Europe.

http://www.backcountrygear.com/image...idian22S06.jpg