Got my RTIC 20 yesterday. Side by side with my Yeti Roadie 20, the RTIC is just a bit bigger. Build quality is easily equal to the Yeti. Before ordering, I watched some YouTube videos that showed side by side reviews. The RTIC seems to be equal as far as holding ice in not a bit better than the Yeti. I haven't had the chance to fill both with ice yet, but will report back when I do.
The Yeti will likely remain as my "faux cambro" as it already smells of meat and smoke, and the RTIC will live in the trunk of my car as a beer vessel for when I'm traveling for work. I'm very happy with the purchase already though, and would tell anyone thinking about a Yeti to strongly consider the RTIC.