Similac Total Comfort VS Enfamil Gentlease

I would love some mommy advice !

My little girl started on total comfort since she was 2 weeks old and has done great on it. She's now 4.5 months old and I just got wic . The wic program for us is Enfamil Gentlease. If I made the switch we would be saving so much money but I'm also terrified she won't tolerate it as I have heard horror stories about Gentlease.

My daughter was born constipated so I know it's not the formula. She was constipated on breastmilk as well. So constipation is one of our issues and so is gas and colics occasionally.

Should I make the switch? My husband says to just try it and if she doesn't like it we go back?? But being a first time mom I cringe of the thought of upsetting her stomach or doing something that may harm her.