In my own personal opinion, I believe Dr. Giotikas is a good and reputable Doctor. I think you will be fine and safe going with him. But it depends on what your goals are. If you are just doing a single segment, I personally would go with Dr. Birkholtz. His packaged deal is a better deal than any other Doctor, while being very reputable and experienced. The only reason I wouldn't go with Dr. Birkholtz is due to his refusal to do simultaneous quadrilateral LL, which is reasonable as I understand he wants to be as safe as possible, but I plan on getting QLL. Dr. Dong Hoon Lee offers a great deal too, and is very reputable and experienced, but his prices as of late have been going up quite a bit and apparently there is a long waiting list as he prioritizes domestic patients first.
If all you plan on doing is PRECICE femurs, research Dr. Birkholtz.
I still have about a year left before I plan on doing the surgery, so I have time to continue my research until I make my final decision.