Having owned one, I agree with others that you will likely experience a worthwhile difference with an upgrade to a Denafrips Pontus. However, note that there is a related, yet to be resolved micro-skipping issue which affects at least some users.
The issue is worrisome because it has been known for quite a long time now, and seems unlikely to be resolved using a firmware solution. The issue relates to CD use, and an apparent buffering problem relating to the Pontus clock.