i would recommend command matrix from etrinix. http://www.commandmatrix.com
pretty good, easy to use and they update fairly often. A lot of usefull features are there already and many more to come, or so they say.
we are pretty happy with it actually
I've only ever been given two dates. They had their release date from when I started to help them with the project 2 years ago as last august. They extended that time only the once to this december with RC for next month because of loads of new functionality requests from us and a number of other hosts.
The last time I spoke to them a few days ago they were still on target.