I love the Gotyu Period underwear and I can highly recommend them.
However, the Athena is the only one I wouldn't buy again. It's beautiful, but it fits a bit oddly and cuts in between the legs. That's somewhat annoying.
I have to say, on heavy flow days, the Super Leakproof Hera is simply fantastic. It's comfortable, fits perfectly, and the high waistband always gives you a good feeling. From this set, I love the Minerva. It feels amazing, is comfortable, and has beautiful details. It also doesn't leak, and you don't even notice you're wearing pads.
The panties are great too. I even wear them when I'm not on my period if I feel weird or want to feel more comfortable.
This set is great for testing. However, I would also buy the Hera for heavy bleeding days.