I have an older Mystery Ranch Quickdraw bino harness. That is almost the perfect harness. The one complaint is it doesn't have the pocket on the back like so many others do. That pocket is a great place to stash a call or your phone real quick. It also does have small magnet. The front pocket is a good size without being bulky, can easily put a thumb release, lens cloth, tags, compass, whatever. The side pockets are great size. Everyone I feel like I know use a a Marsupial, but I can't fit my wind indicator or a phone in their side pockets. Recently I went down a path of trying to get a harness with a little more storage so I could leave my pack at the truck or four-wheeler for whitetail hunts. I have ended up with the Kifaru bino harness. That may be the perfect harness IMHO. No magnets, lid shuts tight one handed, room for phone and small rangefinder in the harness, or if you use a rangefinder holder your release can go in the pocket on the harness. In fact I can go turkey hunting and have a couple of diaphragms and a slate call plus my 10x42 binos just in the harness with no accessory pockets. Can't say enough good thinks about it. The rangefinder case does not hold a Maven RF.1, but it fits fin in the accessory pouch if you get the deluxe bundle.