be
consider sth, deem sth, judge sth, think sth
Owen judged it best to make no reply.

very
We aim to give our guests the very best attention.

by far, easily
This is by far the best restaurant in the town.

at
Who in the class is best at history?

for
I'm only trying to do what's best for you.

Best is used with these nouns:
asset, china, clothes, course, estimate, fashion, friend, hope, interest, kind, mate, means, mind, part, picture, regard, route, sort, suit, talent, way, wish

Best is used with these verbs:
like, summarize