This is a good bit of programming, and is done with the end user in mind, for the most part. I am setting up two different sites using pay-for-subscription models, and this fits the bill to a tee. We had some initial problems setting up the language file so it made sense and integrated well with Joomla registration, but after making some changes to the english.php file, it has worked out really well. When we did have some problems with the module not recognizing a payment, Sergey and his team jumped right in and solved the problem quickly. Stellar support. I look forward to more improvements on this already great extension.