Hi. I previously owned an ARC D125 power amp, and still own an ARC SP9MKIII pre - this combination sounded great, albeit the power amp was unreliable. I've heard an ARC VT100MKII, and liked it - not a world away from the D125 - in Australia in the late 90s it was AUS$9000 new - so I passed. Since then, via an excursion to a Jadis integrated, I've purchased two W4S amps - the ST1000 power to run with the ARC pre, and an STI 500 integrated. I've put up a review here re the experience. Needless to add, I'm very pleased with the W4S components - absolute bargains. I do relate to your "candy store" comment, but the W4S amps sound better than my old ARC set up - just as sweet, more detail, absolutely effortless, oomph and clarity in the bass; and better than the Jadis. I have Usher speakers now, but previously had Wilson CUBS, with their low impedence load - the ST1000 was excellent with these.