I've been using one for the last few seasons (I switch back and forth between it and one of Glenda Green's satchels and tube seats.)
I really like the layout and the fact that there are four pot call slots. I like pots, and carry at least that many early season. This was much better than having to stick a couple in a koozie in a random pocket somewhere. I like that the box call slot is actually covered and inside the vest.
It's well-made. I take care of my equipment, but I don't baby it while in use. Parts of three seasons in, and mine is still in fantastic condition.
I like the seat, and the way it deploys. The grounded, RNG, and Tat'r are the only vests I've ever actually liked the seat on. All of them get uncomfortable after sitting for long, though.
It will be heavier than the RNG 200 you've been hunting, but it isn't overly heavy...until you load it down with too much stuff!