I am a 55 y/o female with saggy belly skin from a long-ago pregnancy and a mild accumulation of fat in my belly, but more so in love handles and back. I have lost four inches from my waist so far - mainly from my abdomen - but am having a difficult time losing the love handles and back fat. I'd like to lose the fat, but my main concern is tightening my saggy belly. Between Vaser Shape and Skintyte, which one would you recommend for the most effective skin tightening?