I've got the StaDry bag from a few years ago. It's definitely not the bag with the most storage, but it does keep everything dry. The only issue I've had with the StaDry is the zippers; they are sealed and keep water out, but they are not "one-hand only" use. You definitely need both hands. Other than that, I really like the StaDry

Hey there Mondo, probably the tour staff bags, but being that is not your choice, I have a Titleist cart bag, and it holds a lot as well. Can use it on my Clicgear as well as a riding cart. Put rain gear on one side and extras on the other. Plenty of pockets. Did not realize you were on this side also til I saw the avatar. FJAs rock.

I have a 14-way and have never struggled for space. I don't normally 'travel' light either. Have you seen the 'tour' stand bags?! Those things look amazing, maybe best of both worlds?

I think the Staff Stand Bag probably has the most of the stand bags available. I have that and the 4up bag which is really light, so you lose some of the storage. I use it when I forget to charge the battery on my electric trolley that takes around a Mid-Staff bag which has all the storage you could ever want. Then when in between, like taking a trip, I use the Staff Stand Bag, which has enough to put what you need for a round, from rangefinder, balls, rainhood, rainsuit, etc.

I have two StaDry bags myself. I can't comment on storage capacity simply because I haven't seen a Staff bag up close. I can say the StaDry bags are weather proof, well built and really nice to look at. I love mine.