Aktchi,
I sold high end audio for over a decade, so I heard virtually everything that was out there at some point. Some of the new, small companies that have popped up I have yet to hear. I would like to hear the Zu speakers, they seem to be on the right track. Direct comparisons have been done with ADS L-1290's, B&W 805's, Infinity IRS, Revel, Accoustat, Paradigm (entire line), Sonus Faber and others. Most of the comparisons have been done in my home which is brick, has a large listening room ( 16 x 30) roughly. Although some of the speakers had deaper bass, none of them had the realism of the GMA's. I have used pretty much every type of music. Rock, jazz, big band, new age, solo guitar/piano, hawaiian, rap, vocals, standards, audiophile and non audiophile recordings, vinyl, HDCD, and DVDA formats. I'm also a musician, which has at least one advantage: I make my own masters so I know how they have been eq'd, etc. I know what my Martin guitar sounds like because I play it daily. At times in listening tests the gma's are scary real. I'm not trying to belittle other designers. I'm trying to get people to at least listen to one designer that, in my opinion at least, does things the right way. Hope this helps.