Casino is the best of the four by a long shot, with Donnie Brasco being a great film too. Heat is great and in my Top 100, but a little overrated IMO ( I much preferred The Insider, although it isn't a crime film). I haven't seen Carlito's Way, and am not a huge De Palma fan.

Casino
9/10
****
#17

Donnie Brasco
8/10
***
#48

Heat
7.5/10
***
#75

Mick

...dot com bold typeface rhetoric.
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Discussing whether or not the Brother is hardcore?