Hi, Lizard.
I've come ever so close to buying a pair of WOW1's a couple of times as they could well fit one of my rooms. I'm still undecided there. Nonetheless, I know what you are experiencing with the Rythmik 12 because I just received my F12G sub from Rythmik on Friday. It is nothing short of amazing in my opinion. It is !!!!!!!!!! good. I had to step outside just to make sure my neighbors weren't on the verge of calling the cops. (They weren't.) It's hard to believe that much boom, crash, smash, pow....mostly stays inside, but it does.
I'm in love.
Enjoy!