I am an extension developer, too and this speeds up things like hell, should be editor's pick! Thumbs up!

helped me a lot finding out several issues on my page and the best is, you can track down if your page strategies are good or not (guess having logical click paths).

I am using this component now for my site which has only one membership plan for downloadable files and only using paypal. And for that use-case it is perfect.

But I wouldnt say that the version now is recommendable for other use-cases since there is still a lot of stuff missing. I know you may enhance its functionality by implementing some plugins for it, but not everyone is a programmer and for that price it should ship with some more built in stuff. But dont get me wrong, it's still awesome!

My biggest concerns are just about the user experience: A user needs to be logged in order pay for a membership and leave the plan list for that, having no visible paypal button.

You really should work on that issue, since one may loose some people who are interested in purchasing but get lost in registering, logging in and finally AGAIN visting the page for subscription but this time with visible paypal button.

Except that it's great. Thumbs up!

I am using that component for my own download site and I can only say: Thumbs up!