We watched it on DVD from our library and it's great though slow moving (typical Werner Herzog), which didn't bother me and my children, as they found the story and the French neolithic Cave Paintings fascinating. I immediately wanted it in higher definition, but missed a sale a couple of years ago. The price just dropped for this version and is now cheaper than the sale price had been for just the Blu-ray. I'm not completely sure about the encoding here if they are both on the same disc, but if the Blu-ray only transfer is nerfed I'll return it. If you are getting for the 3D Amazon reviews say it's spectacular.