Over the years I've been a user of Microsoft's SourceSafe.  Mostly this is because the tool was there and was free (well, it was part of the Visual Studio family of tools).  While for the most part this experiece has been a good one, I have had my fair share of mishaps and issues (mostly regarding web applications).  I'm not going to take the time to delve into these issues as they are incredibly frustrating and I'd spend the time venting, which is not what this blog is about.  I am wanting to get away from VSS for a variety of reasons and am looking into other solutions.

I'm in the process of evaluating other SCM packages and was wondering what your experiences have been with each.  I'm looking for constructive, decision-making feedback.  I'm in the process of evaluating Sourcegear's Vault, and was wondering if anyone has had any experiences (good or bad) with it.

1) VSS
2) Source Depot
3) Perforce
4) CVS
5) Vault
6) Other...