>Business objects are okay if a design time you know the structure of your data tables and they are not going to change and you bring back teh same structure every time nor be too complex. If you build your queries at runtime and change you number of joins, selected columns, filters etc.. or using updatable views you are better off using datasets.

That is a pretty broad statement. I (a beginner) think DataSets have their place for their simplicity. It's truly amazing how much code VS generates for you.