While I own none, the Dominator is high up on my list of future purchases.
I played one some time ago and found it could hold its ground next to a Toneczar Openhouse. I found the Dominator to be a tiny bit more open and grittier then the Toneczar but not in a bad way. It sounded good even on low volumes.
And for half the price of an Openhouse the Dominator is a no brainer for me.