Which Lucene or Solr Branch to Use

If you are still wondering about which Lucene or Solr version to use and you want to live on the nearly bleeding edge, here is a snippet from one of our customer’s emails from earlier today:

“…

first of all thanks so much for your suggestion about using
svn.apache.org/repos/asf/lucene/dev/branches/branch_3x

It really changed our life!
🙂
It’s working well end seems much more stable than trunk/dev.

…”

Is anyone still using Lucene/Solr trunk?  Are you?