I responded on another topic a while ago, so sorry if this is a repeat!
I went with Dr. Fernando Garcia Govea. Tijuanabariatrics.com for my revision.
He was a genius with a complicated procedure.
Hospital florence Oasis was super nice, clean, quiet. The staff was PHENOMENAL.
I had better care than I had in the USA with my first surgery.
My revision was $7500. It was on the high end, but after researching I picked him. He has had no fatalities, a much lower than average complications, he only does a maximum of 5 surgeries a day (some doctors do 15!), and the anesthesiologist is a cardiologist as well. He also works out of a hospital, not a clinic.
If you're interested I'll give you my coordinator's email. She took very good care of me.