for some domains, it's not a matter of where you keep them
it's a matter of where you should have left them.
don't just acquire a domain because it has exacts/cpc or is a dictionary term
without pre-conceiving uses for the domain for potential buyers, as well as for yourself
as for sales venues, list with all you can for free, for most visibility
and park with one where you see most sellers "post" their earnings' report from.
as many can "tell" you who is best, but screenshots are more reliable.
imo...