Lots of info on this board along these lines, but they are likely confusing.

The good news is you can't really make a bad choice, especially with your speakers. After living with the smallest amps, then the mid-size Integrated, then the Toriis (II and III) I'm most enamored of the Toriis, mainly because of their flexibility which allows me to listen to the not so stellar recordings that comprise most of my collection quite comfortably. If you're looking to squeeze out the most fidelity and detail (warts and all) then the smallest amps are likely to fit your bill best. They can make listening to mediocre and bad recordings almost unbearable though, which is why I moved toward the Toriis (that and the fact that I've learned to love the ERR and HR-1 speakers and they like the power!)

I've never heard V-Caps. . . I love the sound of the Jupiter caps in my Toriis and my CSP2+s. That is definitely a worthwhile upgrade. I haven't used any Decware XLR transformer connections--I don't necessarily need "sparkle" and "density" with my system, and in fact prefer to not have an excess of either, and that seems to be the two big benefits. But we all have different system needs and wants and tastes.

Cool. The little amps have a real magic to them. I have a modded C amp that gives really amazing sound, though they don't put out the bass I need with the HR-1s in the big listening space I have now, and get a bit dynamically compressed due to the low power. With different, more efficient speakers and a different room it'd be amazing. In your shoes I'd certainly look hard at the SE84CKCS https://www.decware.com/newsite/SE84CKCS.html