I've since sold the DD-6, and as my playing has improved and my tasted matured, I've been educating myself on delay pedals. I've been watching YouTube videos of delay pedal comparisons, and reading "Best Of" delay pedal articles like this one.
That article does a nice job of summarizing opinions and recommendations from various communities, and they pretty heavily recommend an MXR Carbon Copy delay. On the digital side of things, the TC Electronic Flashback seems to be all the rage, and as of late appears to have surpassed the DL4 in terms of popularity.
If you were me, would you:
1) Keep the DL4, and throw an analog delay into the mix, i.e. the Carbon Copy
or
2) Sell the DL4, forego an analog delay, and get a Flashback or Flashback X4?
How noticeable is the analog delay tone, really? Also, what delay are you using? :)