Spearsand Munsil High Definition Benchmark BluRay

I read in a Home Theater magazine that the folks at this company use the Spears and Munsil High Definition Benchmark Blu-Ray disc to calibrate each HDTV before they do a review on them. I found that to be pretty interesting so I ordered one to try out. I see the reviews on Amazon show that about 2/3 of the people who bought the disc loved it and 1/3 disliked it. I also see it comes free with any Oppo Blu-Ray player purchase. I was wondering if anyone would care to give their 2 cents.
Great disc. Comes with a blue filter. Worth the money. I paid for it and would still recommend it to everyone. Not the same as a professional calibration, but still excellent.
It does not come with the BDP-93, it is an added cost from Oppo. However, I already had the one that was included with my 83. BTW, the 93 is a very slick unit, their best to date.