C'mon, you can't be serious - the Cary Cinema 5 isn't anywhere in the league of these heavy hitters. Sure, it is a great amp for the money. Your speakers and room, and personal preferences dictate a lot too...for example, with small efficient speakers in a small room you may not need the brute force of a Dreadnought or Titan, which means having one in such a system will not give you all the benefits you've paid for. It's all relative - depends on how much of an improvement you're looking for.
I've heard some other news about Sim's new big theater amp - the MC-8. It's rumoured to weigh about two hundred pounds, and run only on 220v. Their own sales VP told me that 220v operation was the only way to overcome certain limitations including current requirements. Apparently, it can double its power down into 2 ohms, and be stable and put out much more still into 1 ohm (ouch!). Yeah, it's kinda supposed to be sort of like multiple W-8's in one chassis with a power supply far, far bigger than even the Titan's. It's not supposed to replace the Titan, only supplement it and take the Titan's place as their new top of the line, but they said they'll continue to build the Titan so long as there are persons to buy it.