I honestly have no idea which one we took, though with looking at a map, it doesn't look TOO different with only a slight offshoot. I know that there was one time that we couldn't find the trail and we took something that we thought it was supposed to be and we ended up almost in the same place and having to go around a stile to keep going? I would say that some parts might be more difficult for folks that are afraid of heights, but I didn't notice too much as I was ok.
For the taxi, I have no idea, but I want to tell you that it is probably a great idea! I had one of the most stressful/crowded bus experiences of my Italian life going to Bomerano! It was not fun at all and I had to use all of my Italian squishing skills to even get a seat! Also if you go on your own, the trail might be less populated compared to right when everyone gets off the bus.