My brandable domains are on Squadhelp.
I add the rest of my domains (mostly .co but also some brandable .coms not accepted by Squadhelp) to DAN.com and Afternic, nameservers are set to DAN.com. Buy it now prices are added to both platforms, in case a domain sells I remove the name from the other platform.
My reasons:
- Squadhelp is the best brandable domain marketplace at the moment - their fee is very high, but they accept seemingly mediocre names, polish them until they become diamonds, and sell them for unreasonably high amounts. I've heard that SH domains are also on Sedo, Afternic and Flippa so your domains have exposure.
- Afternic is trusted by buyers and domains there are quite visible. Their fee is moderate (20%). The downside is that their landers are not great and their UI is ... not great either.
- DAN is my favorite, the UI is fast and beautiful, the landers look good, their fee is very low (9%), transactions are mostly automated (there might be small glitches but their support team is quick and efficient), and they are very innovative.