I've been shopping around to find an everyday bra that is breathable. I live in Louisiana, so it's hot and humid 90% of the year. I usually wear a 34DD or 36D. I tried the 3+ and 3 (kept the 3).
PROS: It's breathable and comfortable.
CONS: It lacks the support I need. It's fine for lounging around at home or going to my local grocery store, but I'm looking for something I can wear to the office under my work blouses. Also, the band rolls a bit in the front when I'm sitting.
Conclusion: It's not worth the money if you wear a D or higher unless you're willing to spend $70 on a bra you can just lounge around in.