This is a follow up to a review that Fulcy posted a while back. It tried to search for the original thread but failed to find it. Here's a link to his review on his site though:
http://www.mechaskunk.com/balljoints.htm
As you'll be able to see Yellow Submarine has added a couple of new useful joints to their roster since that review. The ones I decided to try out are the standard ball/socket joints, the double ball/socket joints, and the double hinge joints.
The regular ball joints are the ones that fulcy first reviewed, but they released some more different sizes sold as singles not as sets in sprues. As fulcy stated, these ball joints are super durable and super tight. They'll be able to hold up poses better than the usual Wave or Kotobukiya ball joints. Those other brands would surely buckle with heavier resin pieces.