RDCM is great. One of the things that I really like, because my job focuses on server security, is that you can send your .rdg to a co-worker (say a new member of the team) and it will make your password unusable (giving you the error "Unable to decrypt password.") That means if you have a fairly large amount of servers, all the new guy has to do is update their username and password and they're good-to-go. All of the servers are already there, so there's no time wasted spent setting up groups, servers, etc. The same goes for backing up all of your RDPs. Just save the file, put it somewhere safe, and retrieve it when necessary.
Heavy is good, heavy is reliable. If it doesn't work, you can always hit them with it.