We have only sold a handful of the new ZAPPulse 2.0 in the USA and I'm not sure that they have been assembed into a finished amplifier yet so I don't think your going to get any comparisons. I know that Lars Clausen has compared the ZAPPulse to a couple of the digital amplifiers floating around on the market..... the more expensive ones at least. In those comparisons there is are only subtle differences between the amplfiers.
We are working on a more complete kit. It will have a chassis, power supply and all the parts necessary to assemble the amplifier (minus the power transformer). After we have a package that is complete I think more people will be interested in making the jump.