Break Tackle is by far the best in conjunction with a high Spin SA. You'll break insane amounts of tackles, even at the Pro level (replays available upon request). Don't waste your time with fake chance, as it will detract from you striving for brTk pieces. Finding a Return Spec piece isn't a bad idea either. Avoid Spin pieces, as you can always get Spin as a bonus SA.
As for what's on those pieces, anything with +3 carrying, speed, or agility is good. If it's a vanilla piece, don't bother with it. Not worth it.