Packing cube vs. dry bag?
Some people prefer to travel using hard shell luggage while some prefer to use backpacks. I pick depending on the destination. If I'm going somewhere with clothes that are prone to wrinkling, I'll go with the hard shell luggage with a few packing cubes inside the suitcase.
If I'm going on a backpacking trip with clothes that look fine wrinkled, then obviously I'll go for the backpack with a couple of dry bags inside. TIP: Try the army roll to give you a bit more space inside your bags!