My .02 - keep your CAM 350's unless you're unhappy with them. The replacements will be "significantly" more expensive, as per Classe. Also keep in mind that the CAMs already have the circuitry and the same output devices found in the Omega series. The CA line stands to benefit the most from the revision, not the CAMs. I owned a pair of CAM 200s which I sold last year, I missed them so much that I recently bought another pair off this site. They really are an amazing value for the money used, resolution and refinement are quite a bit better than the 4BSST which I also own.
