I did some comparisons of the latest v1 Orion firmware and the current v2 for CW keying and clicks. It was a bit of a challenge, because I don't have great test equipment at hand. Nevertheless, the right choice for me seems to be v 1.373b5 with a Rise/Fall setting of ~7. You can see the scary data at http://blog.aa6e.net . 73 Martin AA6E