Steffo,
About a year ago I compared the VK200 with three other amps and chose it because it best delivered the qualities that I enjoy in a system. It had some warmth that I like, while at the same time delivering a good deal of slam. As a bonus, I was surprised with its great soundstaging. Deep and wide with good center focus. Matched with a tube preamp, I feel the BAT does a great job with female vocals and acoustic instruments, and definitely has good boogie factor when needed.
Give great consideration to what kind of sound or change in your system you're looking for. What amp are you currently using?
Good luck!