John, though I have never heard the Concentra or the II, I believe it to be a nice integrated. We as 'philes get restless time to time, if the Concentra is bringing you joy, don't do something hasty and that you may regret, but if you truely feel you are not satisfied, by all means, start shopping!
My speculation is, the BAT is also a fine integrated, but you may just be taking a step sideways. The BAT and Concentra being different in certain areas yet on the same playing field. (This excludes the fact that one may or may not gel better or worse with the rest of your system.)
My speculation is, the BAT is also a fine integrated, but you may just be taking a step sideways. The BAT and Concentra being different in certain areas yet on the same playing field. (This excludes the fact that one may or may not gel better or worse with the rest of your system.)