>True.
>TBH, for my needs it is usually sufficient. In fact I'm not sure what's missing. SSIS ?
>
Try running a search on 'SSMS Express' vs. SSMS - I don't personally know what may be missing. Say, SQL Server Express doesn't have Profiler, but I don't think SSMS reflects it.

It's an interesting question - please research and post back what you find.