I can't speak directly to the titanium actions, but I have a steel Pierce action and have been very impressed. Before I started my build I went there, walked through the shop, talked to the machinist, etc. they seem to care about what they make, pay attention to detail, and generally have their s**t together when it comes to making precision stuff. My bolt/action lock-up is beyond tight-tolerance and the rifle itself is a laser.
I am clearly quite biased as my experience has been totally positive, but thought I would share...