I personally don't like .net, ms office, windows and all this shit. Maybe because I love open source, Linux, Java, Mac.
In a data warehouse project, we utilized MySql as first option but the database was considerably slow with 90 Gigabytes database (We are using "star schema" for the data warehouse).
In order to solve this problem, the database was switched to SQL Server . After the initial historical loading, the SQL Server database has got 460 Gigabytes of data and I am very impressed with the response time.
Considering the amount of data processed, I have to admit that SQL Server is a great database for huge data warehouse projects.
It is difficult to sit on your hands when the SQL Server performs comfortably well in a 460 GB database.