I've had this panty/spanx for well over 6 months now. So let's get down to it.

It's well, breathable. Don't expect to be able to twerk in them but they are not restrictive.
Washes well, retains elasticity, works well with other clothing.
However,
  - tends to roll down at the top after constant use and during a long days wear.
  - does not play well when you go out to try on clothing
  - does not like to be adjusted often
  - will dig into thigh cuts over time
  - makes the transition between thigh and stomach look questionable.

Overall point. Don't wear under form fitting or body con clothing. Not great for all day wear or more than 8 hrs. Breathable, won't make you hot. Does not do will with heavy activity (i.e. dancing).