I use SQL server Access and Oracle, but I have used SQLite and considering the size and function SQLite. It has it's place and again, the footprint is so small. It is great for embedding in smart phone apps, for retaining settings on webservers and client apps for quick prototypes as well. Another benefit is that it can be used on most platforms.

As suggested earlier I would also suggest doing more performance metrics but against SQL CE

Also the newer versions of SQLite (3.7) has Write ahead locking

And there's nothing like being able to drag and drop a few files and your

code runs without having to install SQL server on 150 users desktops

with different OS versions just to read a table.

We still lean heavily on MS Access but there is a lot of code maintenance with ever newer releases since we have different versions in use.