Not long ago I decided to make a subscription for BreezingForms. I am glad I did, because BreezingForms is really a great component. The developers offer written and video tutorials, so for me it was really easy to figure out how the forms work.
I really love that I am free to use the extensions on all of my joomla projects, because there is no domain restriction.
The support by the way is really fast and very kind. They helped me out twice in the past few weeks. ^_^