Traditional lipo, Smart Lipo or Cool Sculpting- which is better for arms?

Cool sculpting will result in the least shrinkage. Forget about traditional lipo. Smart lipo is the way to go but you must find a plastic surgeon who performs a lot of sculpting, utilizes the laser, removes the fat with a powered device and very small cannulas that are 3 mm and less with small holes, and performs the procedure under light sedation so that you can activitely place your arms in all different positions for smooth multidirectional and level sculpting. 

Cool sculpting will be very disappointing.  Traditional liposuction would give you a very nice result in a predictable fashion with low risk.

The answer really depends on how much excess fat, how much excess skin, and the quality of the skin. If the skin is completely stretched out, it will wrinkled once the fat is removed by any type of lipo and you would probably be best off with a brachioplasty. If it's not too stretched, any type of lipo will create improvement. The best advice is to go for a consultation with a surgeon who offers both lipo and brachioplasty.

I would look at before and after pictures and reviews to determine who
is the best surgeon for you. Do not concern yourself with the methods
used, just the results obtained.Kenneth Hughes, MDLos Angeles, CA

The best results for the arms come from liposuction, and you can even get additional skin tightening none of the non invasive devices do.  Other devices, nonsurgical also have a very difficult time with "contouring" and that is especially important with the arm area.  I would suggest seeing someone who does both surgical and nonsurgical contouring so you get the best options.  Best, Dr. Emer.