You mean a "class" to help you with it?

It took it from "TaxMama".  It uses online classes and works through the Gleim EA book and also had another CD of questions (or it did when I took it, they might have changed now).  So it combined an online class with working through other third-party programs.  They have both a self-study version and a "live" version.

It was sort of a 'fun' way of doing it.  I liked it.

But as for your question of the "best" program, I doubt if many people took multiple courses.   🙂

Here is the link for it:

https://irsexams.school/