If you decide to go with the Krell you'd be better off with the KRC-3 than the Kav. Pricewise it should even be slightly less. The sound between the Krell and CJ will be quite a bit different. Dynamics will be stronger with the Krell as will extension at the two extremes. Overall the Krell I'd say is more accurate. The CJ though may have a richer midrange. I went from an ARC LS16 to a Krc-3 and am very happy with the trade. I do miss some of the tube euphony at times though. You could buy the Krell and not be out anything but time and shipping. There's plenty of Pv10's to buy if you don't like the Krell. It's a matter of taste to a large degree.
