It is best not to mix two different things, monetized parking and landers for domain sales. Almost certainly the best for one is not the best, or even possible often, for the other.
Also, in my opinion it is impossible to answer which is best in general, and will depend on the type of domain name. There is no particular reason to expect an exact match .com, a phrase in a national country code, a brandable madeup .com, or a tech specific .io to all sell best in the same place.
I don't know from personal experience, but people who are expert in parking have said that some words monetize better at different parking services, so it is not a matter of one service is best for all words.
Bob