MSB III vs. Soundstream DAC-1 by Krell

Got a Soundstream DAC-1 (the one Krell helped to design). Thinking about getting a MSB Link III. Thoughts? If this is a improvement how much of one? Vs. a upgraded MSB III (half nelson, etc)? Other Good DACs vs the price of a fully loaded MSB III (Half nelson, and unsampler) $850-+ Assembalge DACs?