I'm looking to take my current set up to the next level, and add a cab to my 412 setup. I currently have an Emperor with a Mesa 400 driving it. I'd like to either add a matching 115, 212, or 118 to my rig. The 18 intrigues me greatly, but I have no experience with them. All 3 are fairly close in price so that isn't really a concern. I may also want to use this new cab alone when a show doesn't call for a full stack, so how would an 18 do solo. I know mixing driver sizes isn't recommended by many TBers, but i've seen it done by many to fine results, so that isn't really a concern either. Thanks!