I fish every weekend from April to November, mostly in the northeast, but a few weeks when I can in Wyoming and Colorado. This is my first pair of 'premium' waders, so I can't compare them to high-end Simms, just mid range Redingtons.
Overall, I'm impressed by the fit and finish. Fit was very important to me. I'm 5'-6", 130lbs, so it's tough to find decent fitting waders. I had tried on the previous generation of the Rio Gallegos Short and found them to have so much excess fabric around the waist and a$$. This new version isn't slimmer or fitted, it just has a little less material, and distributes better across the top half of your body. The bottom half materials feels thicker, but is also cut and seamed in a way that it doesn't bunch awkwardly or restrict movement. They feel solid moving through the brush. Also the booties fit much better in this generation.
I don't love the two pockets that flank the zippers. They're too shallow to be useful for storing anything, not to mention you can't really get your whil hand in there to keep them warm. It's like they were designed to hold a granola bar and that's it.
Some people may like the Cellphone pocket, but I find it a little clumsy and a pain to access. Since its not detachable, I may just cut it off.
Lastly, for what it's worth, each wader has an individual number stamped on the inside. I don't know if other brands do that, but it's reassuring to thank of this as a high end piece of equipment that someone has individually considered and tested.
Mine are pair 0002.