Tarzy, the specific style is very important. For David Kahn, the one to try is the "original bootcut" style. Other David Kahn styles have lower rises.
Same iwth 7FAM - make sure you try a "highwaisted bootcut" style, as they have lots of other styles that do not have a high rise.
It's really really hard to shop for jeans, isn't it? I actually took pictures today of me in the two pairs that I considered candidates, but then I chickened out before posting them because honestly they don't look so great in the photos... I already ruled out the 7FAM now; the David Kahn is still under consideration but I'm not in love with them, which is what I had hoped would happen with a pair of jeans at that price tag...
Laura, thanks for the tip re: Heidi style. I see the rise is only 8'' which is too low for me. And my biggest challenge with jeans is actually not the butt, but the muffin top issue...