My vote is Vedavoo sling. I have been a fanny pack guy for a long time. I saw there sling and was able to get one this year. It is the best thing I have got to hold everything I want. I have now switched to a sling. I love it.
I've had the Orvis Sling Pack for a couple years. I do like it, but I also carry too much stuff. If I carry two large fly boxes and a camera (no lunch) it gets pretty full. The newer model may be better. Also, mine is not waterproof and does get wet in the rain (make sure you have a waterproof camera). And, if you fish in the saltwater and have to wade up to your waist, it could get wet if you don't have it high enough on your back. With that said..... I still like it. It slips out of the way nicely, it carries a net (for trout fishing) nicely, it has a place for forceps and is comfortable. I use it for saltwater only fishing cutts or salmon.
I use the Camera bag made by Sage brush. It is truly water proof, and the perfect size for me. I put one of those net magnets on the base of the bag and and the other half of the magnet on the D loop on the back of my waders. It keeps the bag behind me until i need it.
I have been wearing my Orvis sling from the day the were introduced and have sold a ton of them at the store. It's perfect if you're a speyfisher, beachfisher or any other flyfisher who doesn't have to carry everything they own.
I'm glad someone said, "waterproof." That's the one objection to my Orvis pack. It has lost any waterproofing it had so I have to dry it out whenever it gets wet and anything inside gets wet, as well. Does anyone know of a product that can be sprayed on to do the job of waterproofing? Believe it or not, Amway used to have a product called Dry Fab that would have done it but they stopped making it, to my knowledge.
I switch between the Orvis sling and a waist pack. Seems like I always end up deep enough to get the waist pack
wet so prefer the sling for that reason. Haven't ruined a cell phone or camera yet as I try to remember to keep
those in the front pocket of my waders. Maybe Ive's new high heeled boot idea has some merit after all!
I have been using the patagonia sling pack for awhile now and absolutely love it. There is a waterproof pocket inside for phone, etc. There's only one thing I would change, and it's minor. I would put two zippers on the main compartment just like the front pocket, but that's just me being nitpicky!