Is there any difference between hip prothesis used in surgery, and what's the best product?

Not sure: I don't understand the question. Are you implying that regular patients requiring hip prosthesis don't get the best available one? I don't think anyone can answer this question, but i don't think there is any reason to believe that general population is not being given the best available option. I may assume that certain brands of prosthesis may not be covered by insurance companies.