Bella23
At a wedding a few years ago DD asked me to accompany her to the loo and go into the cubicle, she had a pair on and wanted to get them off to breathe, what a struggle we had and when she threw them in the bin there were about 5 other pairs of different makes and styles already in.
She also had bright red welts around her legs and just below her bra. She is a size 10/12 and regretted ever buying them,what they would do to me I can only guess.
I think that the trouble is that if they're tight enough to work they're too tight to be comfortable!
I'm a bit too long in the body, but I think that the bodysuit type are probably better for keeping the midriff under control, though I'm guessing that doing up the crotch fastening is really tricky as both sides pull up under your clothes. The ones without a fastening are really not workable I've found.
As Nannynoodles said, whatever you do the flab has to go somewhere, so it really just evens it out rather than removes it. Sadly I have too much to make this practicable...