I've listened to a lot of DAC's, the prize winners in my experience are like this.
Divided 1st - AK4396 / CS4398
2nd - ES9023
The ES9023 is high performance and quite holographic with speakers, just a little sterile, I found myself using the more 'complete' sounding AK4396 a lot more. Recently I like the fresher sound of CS4398.
I have to give honourable mention to WM8740 and of course NOS (non-oversampling) DAC's, which are theoretically the most analog of them all.
There are more I've heard which are good in different ways, especially if you include sound-cards and portable players, which all have DAC's in them too. Naturally, the amp section in any device, can sometimes completely override the sound of the DAC, the amp section is typically quite coloured, unless it has a transparent chip like AD797. When I say amp section, that includes the line-out.
I was thinking I want the Hifimediy for the office, then I realised I still have Sony Z1070 on the way, and changed my mind. =]