Maybe to big jump to you at this point, just wanna make shure you aware of theese (since you didnt mention them in your post, and no one else in this thread either)
Digital Audio Denmark AD and DA Converters.
I own and use them and think they are one of the best converter out there IMVHO.
They dfegad on apogee and 192´s and deff are in the same league as the expensive one´s everybody mentioned here.