Flex as a Wire Framing Tool

I have just recently begun to dig in to Flex. As I've been mucking around with its design view, I've come to the conclusion that it might be the best UI wire framing tool I've seen or used. Its boasts an impressive list of components, most of which can be easily scripted by even a non-programmer. I mocked up an interface in Photoshop this week in about 3 hours. I then mocked up the same interface in Flex in under an hour. I then populated some of the menus and fields with dummy data and even threw in a functional login for extra measure. I think I've found my new favorite tool for mocking up UI. Has anyone else used Flex for wire framing? Does anyone know of anything with a more complete list of UI components?