<html><head><base href="x-msg://21/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div><div>I've used all the ones you list, and would NOT recommend the Calisto. I took the Samson with me when I was doing demos in Apple stores for MacSpeech and loved it. In a quiet environment, I found the Revolabs xTag to be almost as accurate (and it is more comfortable since nothing goes on your head). You may also want to look at the Sennheiser DW Pro-1 or DW Pro-2. I have not used the Sennheisers but they are highly rated.</div><div><br></div><div>There is some excellent info on wireless microphones at <a href="http://speechrecsolutions.com/microphone_selection_guide.htm#wireless">http://speechrecsolutions.com/microphone_selection_guide.htm#wireless</a>.</div><br><div><div><br></div></div></body></html>