I personally loved Human Traffic. When it came out it was a breath of fresh air. Great to see a film based on British Clubbing, cliched, but great fun all the same. So I was looking forward to South West 9 when it came out, some of the best artists on the sound track like Sunscreem. However, the acting was poor at the best of the time (no great acting from the likes of John Simm), and the story line, well, not sure it had a story line to begin with.
Many of the reviews claimed it was a "darker version" of Human Traffic or it was like a sequel to Human Traffic, sadly, both cases they are wrong. Hire before you buy is my advice!