I use an Emperor RS 412 loaded with Weber Silverwolf/Graywolf.
It has some flub at times, but other times it’s thick and stiff. It’s a rather warm cabinet.
I’ve found that it’s better to let the amp warm up and be moderate with the settings. Less is more. The cabinet provides a lot of the punch, so when you push the settings it results in a looser flubbier tone due to the bass response. However, I’ve noticed that when you crank the volume on the amp after it’s warmed up, it tightens pretty significantly.
It’s somewhat of a double-edged sword. The amp covers a lot of tones, but the finishing touches of your chain will affect what tones it excels at. I had the cab made, and I wanted something that sat in the middle, where I could get that looser warmer vintage tone from it, and I could get a thick, grinding metal tone. The cab sounds great, and it’s super effective at getting those sounds, however if you’re chasing just one of those sounds, other cabinets do somewhat better.
On the other hand, for a live mix, it’s fantastic. I fluctuate between a bluesy JCM800 yellow channel, and a Blueface channel 3 rhythm. I love the red channel for leads, and I jump between Vintage - 2, and Modern - 2 for that.