I've had my Musician III Mk2...oh...three plus years and have had no desire to change it. It effortlessly powers every speaker I've used with plenty of headroom to spare. A single unit is great (and a needed space saver for my audio rack.) I still own and occasionally put in my system a Cary V12R tube amp because of the lush, totally seductive mid range it has, but it does not have the power to really make my current speakers (maggie 3.6) sing.
BTW... a couple of years ago Simon T. at Spectron sent me some perfectly-sized copper spades, which I had Paul Speltz (Anti-Cables) attach to those cables...never looked back when it comes to speaker cabling.