How to choose? ado.net api or object spaces

Hello, I have just read these article, an excellent one in how to make the layers.

http://www.15seconds.com/issue/040112.htm

There are many ways, object spaces, use objectdatasource with strongly typed business entities, you can also do somethings with the dataset designer.


I just don know which one to chooese for my specific project! Any guidelines in how Should I choose my layered arquitecture.

Thanks