Ayre CX-7e or Aging Krell CDP + Benchmark DAC-1?


I know the best advice is to listen and decide for myself but I would appreciate if anybody can let me know which route would you take if given a choice. The Benchmark DAC-1 may not be the best choice although I have read contrasting views on this piece. Nevertheless, I would expect the Benchmark DAC to be an improvement over the Krell KPS-30i CDP which is more than 10 years old now. Given the advancement in digital technology throughout these years, I think I am missing out something.

The real question is, which would be a better option -a one piece Ayre CX-7e or the addition of a DAC to my existing CDP acting as a transport? Which would you choose if it was you?

Any advice or thoughts would be much appreciated. Thanks.
ryder
I suspect it will be a close call. Some like the clinical clarity and resolution of the DAC1. Some don't. I suspect a lot will depend on whether you already like the rest of your system (especially the speakers) or not.
Thanks for the reply Shadorne. I like my current speakers. I would like to add a little bit of clarity, resolution and refinement to the mix and I believe the Benchmark may be the key. I have read good things about the Ayre CX-7e as well so I'm trying to decide between the two.
Cambridge audio 840C for $1599 from audi advisor (returnable). Check it out and read the reviews...you may be happy you did:)