I hear ya on the age and weight thing!
Ya's: lighter weight, more room to stand up in and move around. Packs up fine in the bag it comes in. (If you want to bag it up every time)
Na's: Wind is your worst enemy when setting up, tearing down. Make sure you always have 1 corner staked down first before setting up and tearing down. Also if the bite moved for just a short distance, you can't stay on the fish nearly as quick as a flip over as you have to breakdown, re set, etc.
Hub is a lot more comfortable in my opinion and easier to load and unload from your vehicle.
Both types have there place and time. If you are good just setting up on a spot for awhile the hub has the advantage.
Hole hopping and quick moving, then the flip over has the advantage.