Meet the Masters is used online. Each lesson focuses on a specific artists. You learn about the artist's life and some of his/her famous works. Then, you do an art project based on one of his/her works. The art projects are very directed. We use it and enjoy it. I really like the on-line lessons and so does my daughter. She enjoys the art activities, but I wish they were a little less directed. That said, she prefers the art activities in Atelier.
Atelier is dvd based. We absolutely love it!! My daughter even goes back and does some of the lessons over. I like that it is designed to be used independently. I just gather the materials and do any needed prep work. Then, my daughter completes the activity.
We have used Atelier for 2 years now and plan to continue.