Here is a summary of their Verdict:
The full review can be found here:MIDI offers guitarists used to—and perhaps bored of—the standard guitar-pedal-amp setup a wealth of new sounds. And with the Sonuus G2M, you can get into the action and start laying down drum parts, bass lines, arpeggiated dance or prog-rock parts, string lines, and more right away—and for half the price of a hexaphonic pickup! (You can even use it with transcription software to print solos or lines for students or publication.) Guitarists looking for polyphonic operation and the ability to switch synth patches from the guitar will want to stick with a Roland GK-2A or Ghost hexaphonic system with a Roland, Axon, or another polyphonic converter. But for those with more limited needs, or anyone who wants an easy way to start exploring the world of MIDI guitar, the Sonuus G2M is just the ticket.
http://www.premierguitar.com/Magazine/I ... eview.aspx