I'm guessing you're comparing DVD-A to SACD, trying to settle on the best new format. From what I can tell there are more SACD's out than DVD-A's, I would let the software choice dictate which I bought. Lesson learned from owning a Betamax which was technically superior to VHS but lost the noble war all the same. Personally I'm not interested in the digital format wars since I've had a high-rez format for many years, my turntable. Almost unlimited software selection at VERY reasonable prices and a LP's are a hands-on media I love. You can easily pick up a very good used analog rig for less than a SCD-1 @ $3k and buy 12 used records for every new SACD.