The Metal Pro briefs are pretty good, if you get them sized right. The legs are quite small compared to the hips, so you may have to take them into to get them to perform. You want them very tight in the hips to get the most out of them.
The Jack briefs are nice, but start to fail under very heavy weight. you lose the rebound out of the hole. Most people are going back to Ace brief with Jack suit because of that, or Ace/Ace. That combo works very well for me.