I think it is unnecessary to visit all three doctors before making a choice. I mean if you'd like a vacation, by all means do one but by going toa doctor you will not hear anything different than what you will hear on the phone..
I will personally go with Dr. Mitkovic because of his competitive pricing, lack of complications, I have never seen a diary in which people had any problems - lingering pain, difficulties with walking etc - and the diaries of Dr. Mitkovic are by far the most abundant in numbers (here and at makemetaller) .. besides he is operating just 150 km away from my home town, so I will have friends and family all the time with me. Finally, his method is quite safe and has a great track record of success for only 5 cm, which I would do as a start.
That decision is for me personally a no brainer
Nevertheless, if I decide later on on another 5 cm Femur, I would most likely go to Dr. M ... he happens the operate in a town, which is the home of my favorite football team. And guess what. Disabled people get to watch games for free !