Hi
you'll have to do the research, by reviewing auction sales results to see which names sold, the category and for how much.
then, you'd have to know what each seller originally paid for their domain and how many years they held it before selling... to know if it was profitable sale and how much profit was gained.
as for best, they are all like the rest... you have to view the listings to see what's being offered.
don't look to get spoon fed, feed yourself
imo....