I can't answer your question directly, but I did used to own a VK 200, then went to a VK 60 for a few years, then a 75se and now 150se's. I have also heard the vk55.
The difference you'll get from BAT's SS amps to the tube amps is a more real, more wet, deeper/wider image in the midrange. Depending on your spreakers, you may loose just a little bottom end extension, however you may like this trade off. The SE version of the tube amps really seem to keep all the great SS extension in the extremes, but also retain the super mids.
Personally, I think you'll love a VK55SE-even though I haven't heard the SE version. The step up from a vk60 to 75SE for me was killer.
The difference you'll get from BAT's SS amps to the tube amps is a more real, more wet, deeper/wider image in the midrange. Depending on your spreakers, you may loose just a little bottom end extension, however you may like this trade off. The SE version of the tube amps really seem to keep all the great SS extension in the extremes, but also retain the super mids.
Personally, I think you'll love a VK55SE-even though I haven't heard the SE version. The step up from a vk60 to 75SE for me was killer.