This forum seems kind of "dormant", so I'll step in with some observations on my current system (rig is on my signature):
1. Even though I have yet to get me a larger Subwoofer (Rythmic LS-12), the sound in my system has tangibly gone to a higher level through modest source modifications (Schiit EITR and JPlay SW). Now I'm not even sure I need that sucker
2. The above additions have made me reconsider the KT-77īs (definitely my favorites up until now) for the KT-88's (all Genalex, of course), just because the neatness of JPlay through a virtual network using Linn Kazoo and MinimServer through JPlay makes the sound so much detailed and transparent sometimes I miss some more body (not that it is required, but it is just my preference).
3. The combination of the KT-88's with the new sourcing components (other things being equal) is fantastic! Similarly, I can use the KT-77's with JPlay Mini instead of the cited virtual network and get roughly the same results. At this point I'm not sure what I like best, I guess it depends on the recording quality of each music selection.
I've always been a nut for transparency and detail, along with musicality and body of sound. I'm getting there so fast I cannot believe it! For the first time in years I feel I'm sitting on the platform which will witness my last audio days ... Dennis Had Inspire Pre's and Amp's (in Triode) rule! I'd like to urge you to chase your sound objectives through converging gradual mods and improvements until you really feel you are close enough to that envisioned Holy Grail and can finally relax and harvest the results of your efforts. It is worth it!