I am considering purchasin VPM but have a few general questions, and I'm looking for objective opinions. If you have experience with this framework I would appreciate your feedback.

1. How stable is this framework?

2. How customizable is it? For example, can I change the menu structure, toolbar icons, etc.

3. How flexible is it? For example, I have several forms that require a lot of time to layout. After creating them in VPM, let's say down the road I need to add another field, change the logic, etc. Will I need to regenerate that form with VPM, or can I simply open it up and add the additional fields and functionality I require?

4. What is the learning curve like, relative to other frameworks?

5. How well is this framework suited for client/server development?