Is SQL Server a better solution?

I've recently finished reading a book on SQL Server for developers. So,
right now, everything looks like a nail.

I'm considering using SQL Express, Access or SQL CE to convert an Excel
workbook solution to a .NET/database solution.

The database will be well below 2GB.

There will be about ten tables. The average table will have less than fifty
rows and and five columns. The main table will have less the five thousand
rows and twenty columns.

Security is not really an issue. The data is not sensitive.

Users are expected to manipulate the data through .NET application UI's.

The data will reside on a local server.