I am so happy with my choice to have my surgery performed by Dr. Aceves, and in retrospect, I would pay what I paid PLUS more because the quality of care was better than I have ever, ever received in an American hospital; the ratio of patient to nurse is like 1:1 (sometimes, however, it seemed there were more nurses than patients!). I was rarely in any pain, the night nurses were apologetic to ME for MY shitty Spanish skills (I took five years of espanol in school, but unfortunately most of what I learned slipped out of my brain), the hospital was super clean and I roamed that ****-and-span SOB like I owned it.
Anyway, I felt like Dr. Aceves' only patient. From my understanding, Dr. Aceves does three surgeries a day and takes days off during the week. He was very calm, informative, and receptive to me and my two sleeve buddies whom I met on the drive to Mexicali!
His office still contacts me to see how I'm doing and to see if I have any questions for him. When I was preparing to return home, I received a comprehensive package of x-rays, lab tests, and the like to give to my primary care doctor. Only negative thing was that the blood tests results are in Spanish, so my Kaiser Dr. will have to break out the translator (I live in San Diego so that shouldn't be a problema!)
Ultimately, this is YOUR decision. For me, I was happy to pay extra because my life is worth that. However, if price is something that would prevent you from getting the surgery, I think it's just fine to go to another experienced doctor in Mexico as long as you do your research and are comfortable with your decision. Good luck!