I have tested Afternic and DAN on my best domains and definitely DAN is better given my experience.
I have also sold some non-dotcom in Sedo, so IMO:
- Afternic if you have >5K$ domains.
- DAN for <5K$ domains.
- Sedo for european cctlds and dot infos.
Glad to see more opinions. I think my particular case is biased.