It's a great replacement for autodl-irssi and makes creating filters really really easy. I have a really simple setup: irc announcements -> autobrr -> qbittorrent. Gets what I need seconds after the announcement and helps buffer really easily.
Autobrr's qbittorrent functionality is pretty sweet as well, it can keep reannouncing until the torrent is registered / recognised by the tracker, and you can set custom layouts per filter.
With a bit of filter / release group tweaking, it's a great way to build buffer.