I've noticed the popularity of 280AI has grown substantially. Maybe it is just because I joined the fan club when I had one built. I did learn quickly that you better stock up on critical components such as Peterson brass. Thanks to some of fine LRH members I was able to source enough to get started. When a production run is released for Peterson you need to bite the bullet and order enough. The same goes for other cartridges when ADG or Peterson has a run.