Question on Cardas Frequency Sweep & burn in LP

I like the Cardas record. As far as break in, I won't even consider listening to a cartridge without running each of the sweep tracks for about 20 minutes each, an hour in total.

With 3 different cartridges, there have been 2 different results. With a Denon 103R and AT 120E, the Cardas worked very well to speed up the break in process. With a retipped 103R it did not seem to work as well, but still resulted in a fairly speedy post Cardas break in.

When I read of a cartridge breaking/burning in after 5-7 hours after some time spent with the Cardas the question begs to be asked: how long would that cartridge taken to open up without that time spent on the sweeps. I don't know of many cartridges that open up at the 5 to 7 hour mark.

My experience with the Denon is at least 15 hours for partial break-in without the Cardas. The AT 120E has a reputation for 75 to 100 hours. Out of the box it was unlistenable. With an hour on the Cardas they were both different, and much better cartridges.

I like the Cardas record and use it regularly as a maintenance tool with the sweeps and wouldn't be without it with respect to burn in.

Has anyone done comparisons of the Cardas Frequency Sweep and Burn In LPs (versions 1 or 2) vs the ClearAudio Cartridge Break-In Record? If so what were your thoughts or results.

I use the Cardas cuts 2a, b, and c of the first version LP to "wake up" cartridges I have not used in a long time or to break in a new cartridge. The results seem to be beneficial, emphasis on "seem". But how could anyone have anything but a subjective opinion about the relative merits of each of the three break-in LPs you mention? One cannot do any sort of controlled comparison, because any given cartridge, once it's been run any single one of the 3 discs, has been changed from its new or unused state. It's kind of like wondering whether you should have married this girl or that girl (or guy) post facto.

Lew, I've found it easier and less stressful to flip between test records.

Stressed? Me?
While my audiophilia does cause occasional stress, it is never around whether I am using the "best" test LP. I think Mr. Cardas realized that the best way to enhance the profits from his first test LP was to make another.