All the Metro-Plex clips I've listened to sound really good, but the MKII clips that Jim Gaustad recently posted are what really got me excited about these amps. I need to try one! Regarding the Audette mods, I bought a Marshall Major several years ago that had been modded by Michael. Had it checked over by an amp guy who I trust a lot. From what I recall, he didn't need to touch it. I've been playing the shit out of that amp for years, literally hundreds of hours, and have never had any issue. Can't speak to his ground up builds as I've never owned one; just sharing my personal experience with my Audette-modded Marshall.