I’ve been experiencing back discomfort and heard that some bras help with posture. Has anyone tried one they’d recommend?

Yes, a posture-support bra can make a big difference. I suggest the Etalon Posture Bra at https://shopetalon.com/products/etalon-posture-bra. It’s really comfortable and gives you that extra back support. A good choice if you want to alleviate some back strain and improve posture over time.