I think this is depend on your fat But according to me tummy tuck is best.
In almost all cases I combine liposuction of the hips and abdomen with a tummy tuck, in order to provide the best possible postoperative abdominal contour. Liposuction must be performed carefully and cautiously when combined with an abdominoplasty, however, as aggressive removal of fat can compromise the ultimate surgical result, and can in fact lead to significant complications such as lower abdominal skin necrosis.
tummy tuck (abdominoplasty) is a major surgical procedure requiring general anesthesia, and involves liposuction and excision to remove fat, plus a large excision of skin. The typical result is usually a flatter tummy with a large scar extending from the pubic area to the lower abdomen to anterior hips. Because the surgeon can directly visualize the muscles of the anterior abdominal wall during a tummy tuck, lax abdominal muscles can be surgically tightened during a tummy tuck procedure. Before the invention of liposuction, a tummy tuck was the only surgical method for removing excessive abdominal fat. In many patients (but not all) liposuction of the abdomen can often provide equivalent or better results than a tummy tuck. Because liposuction is safer and causes less scarring compared to tummy tucks, abdominal liposuction is now far more common than are tummy tucks.