I have been excited to try Michelle LeFree's new 3D-printed Reed Replacer System (RRS) for over a week - It's been sitting at the post office waiting for me.
It's excellent.
The functional part of the system uses a groove whereas other systems use a hole to accept the rivet head. The difference is irrelevant to the end result. The advantage of the RRS is that it makes the job easy, offering a stable platform where everything is lined up. You don't feel like you need an extra set of hands to accomplish the task.
Here is a quick video:
To order one: