Mojo, you heard the new EP350's right? Did you think they had the punch that myrison is looking for? He could get 2 EP350s for the EP600 and still have money left over.
I admittedly didn't spend a lot of time on the specs of the 350s before purchasing the 600. It's amazing when you compare the specs how similar they are, though there isn't a FR curve posted for the 350... For my modest-sized room, I'm not sure I'd miss the extra volume the 600 offers as I don't come anywhere close to topping it out now.
I know sirquack picked up a pair as well and also has the 600. Randy, if you read this I'd be curious on your opinions or anyone else who has heard them both.