Even if the TY discs come out as comprehensively superior, it makes good sense to burn onto two discs with two distinct manufacturing backgrounds. Disc manufacturers change their formulations as and when they see fit, and keep these changes to themselves. If one company suddenly begins using, say, a dye formulation that fails after a couple of years, then you have the copies on the other set as a potential failsafe. At that stage you may not care if the initial results, however comprehensive, were less impressive :) Regards Will Prentice -----Original Message----- From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of [log in to unmask] Sent: 25 April 2006 23:13 To: [log in to unmask] Subject: [ARSCLIST] TY vs Mitsui Here's a question for those who use cd-r for preservation. I have used Taiyo Yuden and Mitsui for the last 8 years. In that time TY has always come out of my burners with much better quality as demonstrated by a Clover Systems analyzer. My question is, if TY has a consistently better error rate than Mitsui, is there any reason for me to use Mitsui at all? I know the arguments for and against phthalocyanine. What do you all say? Leaning towards TY exclusively, Kevin Irelan ************************************************************************** Experience the British Library online at www.bl.uk Help the British Library conserve the world's knowledge. Adopt a Book. www.bl.uk/adoptabook The Library's St Pancras site is WiFi - enabled ************************************************************************** The information contained in this e-mail is confidential and may be legally privileged. It is intended for the addressee(s) only. If you are not the intended recipient, please delete this e-mail and notify the [log in to unmask] : The contents of this e-mail must not be disclosed or copied without the sender's consent. The statements and opinions expressed in this message are those of the author and do not necessarily reflect those of the British Library. The British Library does not take any responsibility for the views of the author. **************************************************************************