A nice cheap, economical choice would be the James Duff bars. The ones that bolt to the Ubolts above the axle and springs. I really really do enjoy them as I noticed an immediate improvement when I installed them, and notice an immediate difference when I remove them. With them off, when I was still open diff, I would be spinning tires and not even know it. With them on, they just let the tires grip the ground and when they slip, they'll let you know it. lol. idk...hard to describe.
They only run about $100, and it's one of the best $100 you can spend.
Right now I'm looking into doing a ladder bar type traction aide. Being locked and with sloppy leafs really really sucks. lol.