Man from Nowhere it's alright, but to me it's in the bottom row of that collection of BitterSweet Life copycats.
I'd put A Company Man above it, even.
dunno which one you've watched so far, but i suggest a couple good ones are: City of Violence, A dirty Carnival, Friend, New World, Yellow Sea (and the ones mentioned above, ofc.).
No Tears for the Dead is also a fun action movie.
Didn't like the remake of A Better Tomorrow, didn't like Nameless Gangster, didn't like Asura: City of Madness, didn't much care for Villainess, hated Traffickers, hated Cold Eyes... and a bunch of others i can't remember off the top of my head, right now.
Also some that come to mind, are more in the serial killer sphere than action/gangster so i won't touch those.
And there's the fact that the bottom of the barrell of these movies gets so formulaic, that it's hard to remember which one is which.