Comprehensive

WP RSS Aggregator and its add-ons are a comprehensive package that can do almost anything you need. If the option isn’t built into the core feature set, the online documentation likely has a filter you can add to functions.php to make it work. And if you want it to do something that hasn’t been done before, the customer service is excellent and will work with you to figure out the best solution.

Advanced use of this plugin benefits from some experience with WordPress template tags and hooks — but I’m not a developer, and I still find this plugin has enabled me to do things I’ve never done before with WordPress.