And hopefully no one will think I'm about to start an X-rated conversation!

So I'm looking for underwear that doesn't show lines, and I'm coming to the conclusion that they're impossible to find. Do you have any recommendations, at any price point? I tried Jockey's Slimmies but they ride up a bit. I used to wear Women's Haines but they've changed the fabrication and I don't like them now.

And no thongs for me, I'm more of a "granny panty" kind of gal.