I love that movie, if you were a fan of the series, and of the real heart of the show and Mann's work in general, I don't know how you could dislike it. Granted, it's a little glossier and moves quicker then the rest of his work, but the dark, nihilistic tones of the original show are all there, a freefalling descent into crime and death, the murkiness of the drug trade is perfect....obvious fictional parts aside, it's one of the better portrayal of organized trafficking on film. Besides that, the music, cinematography are just stunning....Colin Farrell has some laughable lines, and a bad accent, but his work is really good...I agree the love story isn't perfect, but again if you were a fan of the show, this was a bi weekly occurrence, Crokett always fell for some wrong women. Everytime. I love the way it's shifty and obtuse, difficult to grasp if not keeping up, the way that shyt is, the drug trade isn't portrayed with the comedic ineptitude of recent Hollywood films.
The grittiness of the shootouts and tense dialogue, the final shootout at the end, loading the boats in Barranquilla, the final scenes. It's a personal classic. Watch 'Springbreakers' and you can see Mann's influence in the way the city was shot at night, and on the water.
The boat trip to Cuba was also amazing, and the opening boat race, plus night club scenes.