IMO - You might want to give the Onix SP3 a try. After some tube rolling I'm very happy with mine. I'm driving Paradigm studio 100v.3s and it's working well - Very tight and clean for a tube integrated in this price range.
http://6moons.com/audioreviews/onix/onix.html
http://6moons.com/audioreviews/onix/onix.html