Glad you found a nice Dac. Well I'm going with Tvad on this one. I've heard the Paradisea Dac and still listening..there's not a chance in hell of the Sony competing with it in musical sound quality! Cheap or not this is one helluva Dac! If you ever get the chance to hear one ..you'll be kicking yourself for not trying it first! As far as needing to spend double of the Sony on a Dac to get better.. I doubt it very seriously. As with everything in this hobby..it all depends on what you're looking for though.
Good listening
Good listening