Anyone listen to Zu Audio's Definition Mk3?

Is this the Isotek - http://www.amazon.com/Teac-Esosysdisc-Esoteric-System-Conditioning/dp/B006RIEPKA/ref=sr_1_3?ie=UTF8&qid=1346792898&sr=8-3&keywords=Full+System+Enhancer+Burn-In+CD

or

http://www.musicdirect.com/p-3521-isotek-full-system-enhancer-burn-in-cd.aspx

Listened to the Zu Def MK4 back in July (Zu House Party) the same day that Gopher did and was very impressed. Also, listened to the Omen Def and Soul Superfly and made the plunge and purchased the Omen Def with upgraded Def3 tweeter and cap upgrade. The tweeter and cap upgrade will arrive in couple of weeks since the cap is on back order.

So far I am enjoying the setup being driven by Response Audio Bella Extreme 3205 integrated with Black Treasure KT88.

Gopher,

Which Isotek cd are you using for burn in? Would like to purchase one.

Thanks