Depends on what your goal is, and what kind of ride you get the most out of. As you mentioned I like Wilpers because there is a definitive method that shows consistent measurable results. On days that you aren't feeling it, doing a PZ ride helps you get through. By that I mean, even if it is a bit harder than normal, you know that you still need to maintain a certain zone. Similarly, perhaps you have a day where you feel really strong. Power zone training also help keep that in check. It is a nice balance imo. Of all the instructors, I think everyone here will agree, Wilpers is by far the most focused on technique. Perhaps try out the beginner power zone program and see how you like it. I would say 90-95% of my rides now are PZ rides (even though Wilpers low impact rides are not technically PZ rides, I lumped them in with this figure).
Early on though, I highly advise you to try a number of different instructors and classes. They each have different personalities and workout types. It won't take long before you figure out what you do and don't like. Another thing I would mention, whether you decide to do PZ training or not, take a Wilpers low impact ride to get your technique down early. You do not want to get into bad habits that cause pain, and you have to get rid of later.
Last thought for now. I highly highly advise you get into the stretching classes. It might seem like a tedious or frivolous exercise initially, but it will pay dividends down the road, and is a good habit to start from the onset.
Early on though, I highly advise you to try a number of different instructors and classes. They each have different personalities and workout types. It won't take long before you figure out what you do and don't like. Another thing I would mention, whether you decide to do PZ training or not, take a Wilpers low impact ride to get your technique down early. You do not want to get into bad habits that cause pain, and you have to get rid of later.
Last thought for now. I highly highly advise you get into the stretching classes. It might seem like a tedious or frivolous exercise initially, but it will pay dividends down the road, and is a good habit to start from the onset.