As crazy as it sounds I have not heard the silvers here myself yet! Once and a while I make them up for OEM customers and to send back to Dave for his customers but since I don't want to solder and unsolder the pcb's to test them here so I have yet to play. Would not want anyone getting nice new modules that look used! I have recently sent out an AVC-1 with silver modules and some silver wire to a fellow and maybe he can reply when he gets it built - it has not even reached him yet so that will be a bit of time from now anyway.
The OEM's who have used them really liked them but they do come at a pretty steep premium cost wise - the silver magnet wire is silly expensive these days. Maybe I am a bit afraid to hear them for fear I really like them, report that to folks and as a result frustrate customers who are not able to swing the very high price!