I'd say get it. I have both L4D and L4D 2 and the sequel is FAR better.
Judging it apart from the the firs tone, it is a an excellent standalone game. If it were released as it is, instead of L4D it would have received far better reviews, sadly the reviewers took some points off of it for being a fast sequel release.
Judging it apart from the the firs tone, it is a an excellent standalone game. If it were released as it is, instead of L4D it would have received far better reviews, sadly the reviewers took some points off of it for being a fast sequel release.