Myung is NOT one of the most technical bass players out there. And also NOT one of the best all-round bass players out there. He's just very good at fingerpicking - in other stuff like slapping he falls completely behind monsters like Bill Dickens and Vic Wooten. Myung's just not all-round in his technique. Furthermore, he lacks the most important aspect of a bass player: GROOVE. Myung only grooves bits and pieces on DT's Falling into infinity and Scenes from a memory - on the other albums this part in his playing lacks completely, and DT loses part of what otherwise could have been WAY more taste. Myung does fit in the band well, though - but just laying down a basic groove he does rarely.
For that, I'd prefer Sheehan or something.
For a technically versatile player, check out Sun Caged's Rob van der Loo. (
www.suncaged.com; download the song Four Guilders), or
www.robvanderloo.com).
The guy slaps, fingerpicks, grooves and taps his ass of on a seven-string bass, whilst still fitting in a band - friggin' great.
BTW - As for Miller, he fitted in SyX when he was there- but as a bass player he's nothing really special when compared to others - a very decent bass player though. I prefer LePond because of the Live album - very tasteful bass playing, just what SyX need.