You pretty much nailed how I view the Rumble, GK, and Ampeg. I do think that the GK eq is very flexible, and probably would be my preference if price weren’t a factor. I had an RB210 briefly, but it didn’t really offer enough portability over my Genzler 212 cab to justify keeping. However I picked up an RB112 used, and that has been a fantastic investment. Really nice deep low end and very easy to carry. I use IEMs, but I like have an amp when I can just for a little stage volume, and this one has basically lived in my car this whole summer and I’ve used it on every gig.