Not best, but optimum Transmission?

7milesout said
Really considering taking a class specifically about automatic transmissions this summer at the local tech college.

I would suggest that if you would take a class, you are obviously a thinker. I suggest either, or both of these books. You will learn gobs, even if you don't intend to actually work on your own trans.

https://www.amazon.com/dp/1613253354/?tag=joeychgo-20

https://www.amazon.com/dp/1557883998/?tag=joeychgo-20

HTH, Lefty71