Oracle 10g Express vs SQL Server Express

I can state the sql server 2005 express is even after messing about with statistsics, rebuilding indexes etc , was something like five times slower then MSDE. There's also a few studies listing an uncomfortable amount of bugs in the profiler.

After investigation my company has dropped it for at least a year.

So all depends on what you mean by simple. If you mean reasonably simple schema, not a massive volume,user initiated transactions for up to
10 users, well that's what we did.