Weak link?

SVS speaker cable, biwired.  
Audioquest Evergreen interconnects, 
And just a basic power surge protector at the moment. 
These are great ideas and I appreciate your input as I'm not quite  a newbie to the world of audio perfection, but have much to learn. 
The D3 series sounds fantastic, just demoed  800 D3 with mono McIntosh 601 at local dealer and was floored but even 804 D3 are out of my current budget, and I just purchased the D2s from an acquaintance at a great price. 

Nobody can tell you what you are going to like better than what you have because there are too many variables.  You will get many well-meaning suggestions here, and that's good.  But, IMO, the only way to really figure this out is to make an appointment with a dealer and find something that you believe gives you that "wow" moment you seek.  Then figure out how to integrate the parts of the system creating the "wow" into your system within your budget and space constraints.  IMO, anything other than this is stabbing around in the dark, but of course you could luck out.  Many people are intimidated by dealers and I can certainly understand why, but IMO you should give it a shot.  I learned alot from dealers, even the pricks, and there are plenty out there.  For example, through a change in preamp, I found the system gave me the upgrade I thought I knew would come from the amplifier.  Just an example.  Anyway, that's my 2 cents.  Good luck.

I'm sorry I didn't notice your last post about auditioning at a dealer, which is smart, IMO.  Unfortunately for your wallet, maybe you need to reevaluate your budget.  Sometimes the sticker shock of an item puts us off, but once you get used to the price, you may figure out how to afford it in a responsible manner.  Once your taste evolves past what you have, the only choices may be to content yourself with what you have, buy some other similarly-priced gear and satisfy yourself with a sideways change, or just bite the bullet and upgrade for real.  Contrary to what is often thrown around here, sometimes spending more money does bring significant improvements.  

Harry, looking into your speaker cables and interconnects, I think you deserve an upgrade there considering the quality of your components. You will probably get a bigger bang for your buck than with upgrading power. I started with the AQ Evergreen cables just like you, but they are in no way revealing or the most dynamic in terms of frequency extension. You should try a few different brands - many of them have great return policies up to 30 or 60 days.

Personally the cables that got me to the “wow” moment were the DH Labs Air Matrix Interconnects (which I bought used) and the DH Labs Q-10 speaker cables (which I bought as bare wire, not terminated so I saved a bit of money that way). I still use plenty of DH Labs in my system, but I am now on their highest tiers of cables across the board as I have since upgraded my components, encouraging me to try even higher end cables like their Revelation series.