Is this the best of the Grisham adaptations?
I think it might be, though I say that with the caveat that I still haven't seen The Pelican Brief, The Chamber or The Gingerbread Man. It is at least the best that I've seen.
Francis Ford Coppola did a great job here crafting a film that had great casting and performances, interesting twists and turns, and some good humor.
Damon is great here in this early role and it, along with Good Will Hunting which was released the same year, helped to establish him as a star.
Personally, of the Grisham films that I've seen, I'd rank them thusly:
The Rainmaker
A Time to Kill
The Client
The Firm
Runaway Jury
I think I'll watch The Pelican Brief tonight. I believe it is supposed to be pretty good.