PeaceHill Press is Classical. There are similarities with CM. I found this article helpful.
http://www.welltrainedmind.com/charlottemason.html With TWTM you don't have to supplement except for finding a math program that works for your family but if you have something that you like and works for your family
I really wanted to do Ambleside but my husband was having a tough time grasping how to schedule and implement. He gets TWTM because of how the lessons are laid out. If I'm sick or have to care for my sister or go to a specialist appointment with Bird he can pick up the lessons without confusion. I guess in the end we are kind of picking and choosing to make our own classical education.
I also wasn't going to argue when he finally spoke up and expressed the desire to really be a part of hsing our children.
I had originally planned to download the books because I wanted to hs as inexpensively as possible but since I don't like to read off the computer I was printing everything. I ended up buying the books we are going to be using.