It is apparent to me, based on your consultations, that liposuction alone will probably not meet your needs. There is no question that brachioplasty (using a combination of direct skin excision as well as some traditional liposuction) will be the definite solution for your problem. There is a linear scar that runs along the inside of your arm, but this usually heals very well. If you are willing to accept this scar, then this form of surgery is for you and is very predictable. I have treated a sizable number of patients who have uniformly been pleased with the results.
The use of Smartlipo (use of a laser based system to destroy fat cells) is relatively new and advocated for localized fat cell deposits. Thermage can be very unpredictable for skin tightening. If you want to be a trial case for these techniques, then go into them with your eyes opened! The second doctor offering these techniques spent a lot of money purchasing these systems. It remains to be seen if they will be effective for your problem.