DAC Upgrade

Sorry, I did mean R2R and yes I have not heard any of the DAC's mentioned above which I am sure are very good. I have done research into the technology of the R2R and from what I have read from every review by audiophiles and professional reviewers is that they perform better than the Delta Sigma DAC's as far as being more musical than good digital. Yes they are only decent on OS mode but are outstanding in NOS. Just take a look at the components and build quality of these DAC's. I don't make my decisions on measurements but on there merits to bring music alive and non fatiguing which a lot of name brand Delta DAC's don't do. 

Wow! I didn't realized I would create such a firestorm of opinions on DAC's and the various technology and  formats. I respect every opinion on the board but although measurements are important, I have found that great measurements don't always produce great sounding equipment. You can see the state of confusion we audiophiles are in when it comes to buying our equipment since we now choose from a plethora of really good products. I wish I could evaluate every DAC mentioned here but that is not possible so the only other choice other than system measurements is to rely on the findings of other audiophiles and reviewers. I am sure that any of the DAC's mentioned here would make me very happy at my price range. I will continue my search for now and probably add to my short list. 
Thanks everyone for your input

Everyone is entitled to their opinions but the final opinion belongs to us audiophiles, who love their music and the equipment that gives us our quest for musical pleasure. Like I said before, there is soo much good stuff out there for us to choose to achieve our happiness. To most of us, this is a passionate hobby so let the dialogue continue.

thanks George. 
I will check this one out

George,
It appears that you like the sound of R2R DAC's and I assume you had the Holo Springs DAC? Which level did you have and would you assume that the revision 2 will be even better.

I received my Holo Spring2 KTE version a week ago and letting it burn in.
I have 120 hours on it now and still needs another 30 or so but I can tell all of you that this is one fantastic DAC. I don't have a AMR lll to compare it to but my audio buddies do have high end DAC's for comparison. I am using the I2s input in NOS as I have found these produce the best sonic results. I will post my detail findings in a couple of days.