Is Walmart / Parents Choice Formula as good as Similac or Enfamil?

I am pregnant with my second baby and am considering Parent's Choice Premium formula instead of Similac or Enfamil because it's SO much cheaper. Have any of you tried Parent's Choice Premium? How did your baby take it? My first baby was on Similac Advance Early Shield and had no problems at all with digestion, fussiness, gas, spitting up, colic, etc. I'm especially interested in hearing from parents who have also used Enfamil or Similac. Thanks!