Have a Rega P3 with an Elys cartridge. I've read in various places that performance can be increased somewhat by changing both the stock platter (from glass to acrylic) and the felt mat. I know that there are other "after-market" upgrade products available for Rega decks but I was wondering what other owners had done to theirs in terms of changing the factory platter to an acrylic one and replacing the felt mat. I did try the Ringmat XLR mat but I was a little disappointed, to say the least. I have been looking at a couple of upgrades here: http://cgi.ebay.co.uk/ws/eBayISAPI....4&category=3283 http://cgi.ebay.co.uk/ws/eBayISAPI....4&category=3283 Do these upgrades look worthwhile?