Both are worth trying.
The elasticity of pantyhose is very good, they are easier to adapt to big girls. It can help shrink your abdomen and make your belly look flatter.
The shortcomings of pantyhose are also obvious. They are usually very thin and easily damaged. They are usually woven from acrylic or spandex, so their breathability is not good. In addition, if you don't like the abdomen being bound, then pantyhose will not satisfy you.
Thigh high socks are often thicker, especially Kayhoma thigh high socks, so their elasticity is not as good as pantyhose. Even so, the elasticity of thigh high socks is suitable for most girls. The cotton material of thigh socks and high socks is very soft and breathable, and their texture is closer to underwear. In addition, they will not have the trouble of restraining the abdomen, even if they are worn for a long time, they will not cause trouble.
Some thigh high socks need to be matched with garters, but Kayhoma thigh high socks will stay up very well, so there is no need for garters at all, which is comfortable and free.
Generally speaking, I still prefer thigh high socks. They leave the gap between skirt and boots on the thigh so charming.