>> My preference is unbound interface.
>
>Could you list the advantages and disadvantages of an unbound interface?

Advantages:
1. Free navigation through data (no private DS, forget about triggering row buffer).
2. Full power in displaying control values/captions.
3. No necessity in resolving uncommited buffer changes when user closes form/app unexpectedly.
4. Seamless change from 'pessimistic' to 'optimistic' data sharing.
5. Full control when data is really saved.
6. Interface is not connected to data, so control classes can be moved from project to project with no changes.