Hi guys, I have a B&W 602S3 and am very happy with it. But the fever's upon me to upgrade,and hence I am looking for a floorstander. I have been offered a B&W 603S3 at £350. Now my question is - is this an upgrade? How much of an imporvement can I expect? I will be driving it with a pair of Acam amps(8R and 8P). Is there any possibility of performance going downhill at all? Just feeling nervous before taking the plunge,as the 602's sound very good and I don't want to be disappointed.