We use Enfamil Gentlease (I think that's the Enfamil equivalent, I could be wrong) and it really helped make feedings a lot easier. If you're having reflux issues I would definitely experiment with something similar to that!
We use Similac Sensitive. Enfamil Gentlease made LO's poops really stinky, and he didn't tolerate it well otherwise. Whatever you try, give it a couple of days before making a decision.
Re: Formula question