I bought my first pair about four years ago and was quite pleased with them.  They are like a heavy duty control top panyhose but they really lift and tuck the goopy stuff.

Recently while trying on some new skirts I turned around and was dismayed at what appeared in the mirror!  Horrors!  My butt has gone south, but not to worry, I tried the said skirts on with my Spanx and that solved my problem.  Now the twins back there look nice and perky...well, not like when I was 16, but maybe when I was a 33 year old dance teacher.

The waist and thighs stay in place, no rolling there.  Even though I'm a size 2 it does take a little more "work" to get these babies on. But once they are in place, wow!