I would have to recommend any of Joe Satriani's stuff. They look perfect on SpectroLog as he does have great note separation. His 'Swallow the Lizard' sound looks particularly weird on any of these visuals (Timeshade is pretty good too)
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock