Although I am a happy user of a VK-500, I think that I would recommend the Plinius, as most bang for the buck. With plinius, you may want to read up on the differences between different Mk. versions of the amps before deciding.
Disclaimer: I admit that I have listened to more BAT and Plinius gear than Levinson and Classe. I also have not listened to Arial's. They may indeed have a Levinson synergy.
Have fun.