Hiya Jeff,
I'm a little late to the party but what a great topic

It's interesting reading everybody's impressions. Guys like you and I are really lucky. We get to play with cool gear for extended periods of time, in turn we are able to find our own personal audio Nirvana easier than most of our friends here. For them, it is a long (and sometimes very) expensive trip.
For me, I've reached (pretty much) the end of the road. Sure, there are a very few minor tweaks to do like fine tuning with cables but for the most part I'm done. I don't think my system can't get any more musical or revealing. My modified, actively crossed and bi-amped OB's and bass bins give me tons of adjustment so I can play
any type of music at any volume and have it sound great. Unlike many, I haven't been able to find any speaker over the years that does
all music well without forcing you to get up, reposition them or play with port plugs (and no, that doesn't negate anything I've written about speakers over the years). In turn, the only way I've ever been able to satisfy the need of mine to Rock my brains out with bass heavy music one minute and accurately reproduce a small Jazz quartet the next, is to actively crossover speakers. I use vintage crossovers that have adjustable slopes, crossover points and gain pots. This gives me the ability compensate for unbalanced recordings. Yes, if you read into that, I use the adjustably of the crossover as tone controls (of sorts).....
I'm sorry, I miss tone controls. There is a myriad of music out there that needs compensation of some sort (usually its rock and is bass shy). There is nothing we can do with a truly crappy, overly produced, clipped or compressed recording. For those that need a minor amount of bass leveling (or maybe crossover point change), the vintage active crossover absolutely does the trick. Best part is, in my system the crossover point is low (150Hz), so I'm not mucking up the midrange and treble regions trying to timbre match drivers. My Lowthers do a great job from 150 to about 14k (in an OB). The way I have it setup, it is the most coherent sound I've ever heard. It truly has that 'voice of God' presence that I've only experienced in a handful of systems.
When it comes to digital or analog, I'm a fan of both. When it comes to tubes or transistors, I like tubes on top and transistors on the bottom. This lets you have the best of both worlds. When it comes to music, I'm just a fan and my system lets me get lost in it. Luckily I've hit that synergistic point in my main reference system that I don't listen to gear anymore. Its all music. When I roll stuff in and out, I'm always glad when I can get it back to its original state. Oh, and just like most others, I'll never go back to a stand alone CD player. I'm looking to buy my third (and maybe fourth) SB.
My system may not be for everybody, but I sure like it
