Eaton is the brand you want for new leaf springs. I have heard a lot of the others do not last, they start to sag too soon. As for what else to replace at the same time...easy enough, Shocks, bushings and shackles(and rear axle if you plan any upgrades there). I would suggest researching bushings and shackles if you are upgrading for performance. Same for shocks....Koni or Bilstein might be spendy, but there is a reason they have a good reputation.