To date there are no synthetic saxophone pads that have gained wide acceptance with the exception of the Jim Schmidt Gold Pads. For reasons I don't understand the pads made with synthetic material seem to work much better when made in smaller sizes for clarinet and oboe. Some techs are using them on bass clarinet, but they have toneholes that are much different than those on saxophones.
I am drawn toward both function and cosmetics in pad choices. I have white roo pads with silver resonators in my Selmer SBA alto. I have installed chocolate roo pads with gold domed resos in several Mark VI overhauls i have done for customers. To me the dark brown leather with the gold resonator gives a lacquered sax a classy appearance the same way a white pad with a silver domed reso does on a silver plated sax. I like the Music Medic roo pads because they are firm, they are quiet, they don't get sticky like other pads, and they last a long, long time. I also do a lot of repads and overhauls with the Music Medic standard tan pads, and have done several using Pisoni Pro pads which are excellent, but a bit pricey.
I would suggest you ask your tech which brand of pad he/she prefers and go from there.