If you are like me and you find that nearly all gigs feature the not so optional 1/4 mile walk from parking to stage then you know how the weight of a baritone can make one arm longer than the other. I like how my Yamaha YBS-61 case protects it but it doesn’t feature wheels and is not strong enough to support the addition of casters. Trust me I’ve tried it.
My recommendation: Get a folding hand truck from the Home Depot.
This thing folds small to fit in the trunk of my tiny car and it can handle the weight of my baritone, stand, and whatever else I can attach that is less than 150lbs. The best part is that it cost under $30.