Acrobat 6.0 Professional creates fillable forms.
The free Acrobat Reader can USE fillable forms. Users of the "Reader" product can fill in and submit forms.
As to saving a form's data, printing it and so on, I don't believe Reader does this with Reader 6.0.
Adobe's entire Acrobat line is fragmented and confusing, made even more so by recent acquisitions that have been forced into the Acrobat or "Server" line of products. Then too, they don't know how or to whom to market the product.
They ONLY definitive statement one can find regarding Forms and Reader is:
Q. Can I fill out Adobe PDF forms in Adobe Reader?
A. Yes, as long as the creator of the document used the appropriate tools in Adobe Acrobat 6.0 Professional to create interactive form fields, not static form fields. Ask the author of the document to create an Adobe PDF form that can be completed electronically in Adobe Reader with interactive form fields.
So indeed the user can "fill out" and "submit" forms, but no statement regarding printing, saving, or copying.
You asked for alternatives. Yes, there are. Google for "PDF Form" and you'll see a lot of form-related PDF tools.
Thomas D. Greer
Providing PostScript & PDF
Training, Development & Consulting