On Mon, Mar 22, 2010 at 5:45 PM, <w4wst at cox.net> wrote: > Any HEIL headset at any price does not compare in performance or value. I think the Yamaha CM500 has smoother mic audio than my Heil ProSet HC-5 but the ProSet phones sound slightly smoother to my ears than the Yamaha cans. 73, Barry N1EU