Pdreher,
I see you have Plinius SA-102 and Aesthetix Calypso. I have not heard any Calypso, but heard some Plinius int amps. They are indeed fine products.
For price wise, SA-102 and Calypso are more expensive than BAT. MSRP is $5000 vs $3000 (SA-102 vs vk-200) and $4500 vs $3500 (Aesthetix vs vk-30).
Also, SA-102 and Calypso are much newer components. I wonder how the comparison would have been if vk-250 and vk-32 were used. Well, that would not be a fair comparison either since BAT gears are 40% more expensive.
If I were to go for used SA-102 and Calypso, I would have to pay $2000 more ($3000 for BAT vk-200 and vk-30 vs $5000 for SA-102 and Calypso).
As of now, I am interested in seeing how vk-200 would match with vk-30 in comparison to Rogue. If vk-30 wins Rogue will go, and if Rogue wins vk-200 and vk-30 will go. I guess it would be rather unfair to Rogue since vk-200 has a better chance to work well with BAT preamps and Rogue may mate better with non-BAT amps.