The procedure that you choose should have the best chance of acheiving the result that you want. If you bend forward and the loose skin that you have is "gross" to you it would be best to choose an abdominoplasty.
The tummy tuck can be tailored to the problems present in your abdomen, and often after three pregnancies the muscle is loose and the elasticty of the skin severely compromised. As in all cosmetic procedures tummy tuck is not a single technique and can be modified as a lower tummy tuck often called a mini tummy tuck, or designed to address the entire abdomen if needed. In either case the procedure must correct the skin issue you note in you question.
Laser liposuction is a new technique which is as yet unproven. The laser creates heat which ruptures the fat cells and causes a thermal effect in the surrounding tissue, simply put a burn. The ruptured fat can be removed like traditional liposuction or ultrasonic liposuction or left to reabsorb in localized areas. The heat effect is felt to shrink the skin, but the jury is still out.
I still beleive that if fat is the problem and your skin tone is good, liposuction with any technique is for you, however if the skin is lax make sure you find a board certified surgeon who can provide the best tummy tuck for you.
Best of luck.
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