In plus SQL Express nu mai are limitarea de utilizatori.
In MSDE peste 5 conexiuni simultane performanta este limitata.
http://blogs.msdn.com/sqlexpress/archive/2004/07/01/171005.aspx
Cristian Andrei Lefter, SQL Server MVP
MCT, MCSA, MCDBA, MCAD, MCSD .NET,
MCTS, MCITP - Database Administrator SQL Server 2005
http://sqlserver.ro