I use the orvis magnet one, and have for a few years - however I am picky about it and lately it has not been working great. The plastic clips suck and the bungee came out of the plastic. I tied the bungee onto the split rings that the magnet came with.
I tried a retractor, but did not like it as much. I might need to move back to the gearkeeper, since I keep my wading staff on one.
I either keep my net on a backpack, or wader strap - or sometimes a rain jacket D ring, depending on weather and where I fish.
BTW, I swear by McLean weigh nets and have been using them for over 20 years.