Is Anterior hip replacement the best type for hip replacement?

I had THR 2 years ago, surgeon used robotic procedure on posterior left side. Pain never let up for 15 months. Many tests to no avail. Sent me to a Joint Reconstruction specialist. He said the shaft was too small or not long enough. In March he wanted to implant a longer shaft.
When he did the posterior op., he said things were not good, so whole process was redone. Five months later still pain and difficulty in walking. More tests etc, the shaft was loose. Seems the answer is another longer shaft using the anterior approach. Am awaiting schedule for it. Really discouraging.

I am still trying to decide which approach is better. I went to a younger doctor who only does the anterior approach, which takes longer, and I went for a second opinion to an older, more experienced orthopedic surgeon, who says he does the posterior and it's better, easier and takes only about an hour as opposed to a 3-hour anterior approach. He said he tried the anterior approach and likes the posterior better. I have friends who've had both and both are happy with the results. The posterior doctor said I could have it in a month's time and be good enough to travel for Thanksgiving if I have it in the middle of October. The anterior younger doctor says no traveling for 3 months. It's a big decision for me, of course I'd rather have it be done with so I can travel across the country to be with family for thanksgiving, then go 3 weeks later to travel for Christmas, but I want the one that is best for me.