I like it.
I originally ordered the awaking prologue and i did have a fantastic meditation. I did it every day for a few months, after a while the effect did lesson tho did not stop. I then ordered the entire series.. and still enjoy it. I am only around 6 months into it, i can say, i love that feeling of floating etc.
So far, no regrets, no issues, nothing bad to say. I found deeper levels are definitely way better..
I also found, i like to lay down during it, not sit up like they recommend. I also bought really big nice comfy sony headphones they are the ones holosync recommends but i got them on amazon for way cheaper.
Hope that helps
Adrienne