Simms. As Harvey said, we're selling a ton of Readington Sonic Pros and they aren't coming back like the Dan Bailey's did. Great reviews, but I haven't tried them myself.
What I don't understand is how so many of you get leaks in good or decent waders. I once owned Orvis waders the year they cheaped out and stopped using Gortex and they weeped all over. I exchanged them and the 2nd pair were no better. That fly shop (in PA) told me Orvis changed materials and lots of those waders were coming back, so I bought Simms G3s and never looked back. At some point, Orvis went back to Gortex, but they burned me and lost me as a client. I think lots of guys are walking through multi flora rose bushes and getting tiny holes that lead to small leaks (your pants will have a small wet spot near these leaks). That is not the wader's fault! Whenever that happens, don't send them back because that's the reason we all pay $400 for $50 waders. Do what Simms and the other manufacturers do and turn them inside out, take a bottle of rubbing alcohol and put some on a cotton ball, and rub the alcohol over the area you are getting wet. If you see even a tiny spot or thin line that is darker than the rest of the material, apply a small amount of Aquaseal on the area. You don't need the alcohol to dry even. Problem solved. In all my years wearing breathables, I've never experienced a failed seam. Just the odd tiny spot from a briar and one nasty encounter with a Hyde's boat anchor cleat that required a patch over the tear but which lasted another 3 seasons.