i've heard a small amount, but not enough to form an opinion. what i do know is that i respect the hell out of these guys as musicians, dimeola, holdsworth (ESPECIALLY holdsworth), macalpine, etc. they do things that nobody else really does, and in holdsworth's case, that nobody really can. not only are they this good technically, but they can put it together to sound so great. i heard a holdsworth solo once that was more jazzy, so it was all out notes (notes not of the chord), but they sounded so perfect! that kind of thing amazes me, not so much technique anymore (i was foolish once).