I currently run Wharfie D330 mains in a 2.1/music and 3.1/TV setup. I'm mostly concerned about music. I've been searching for an upgrade, 12.4, 12.3, even 240 or EVO 4.2. Anyone have any thoughts on whether these would be true upgrades? I have a Denon X1800H, listening position is 13' from fronts, room is 15x18 with long wall completely open to much larger space, mains are and will be 1' from back wall. I'd have to buy any of these models non-returnable, probably used so any info upfront is appreciated. Thanks!