Sophia vs. Study.com vs. Straighterline?

[ss20ts]

I would say it depends on where you're transferring to. Sophia is all one needs for UMPi which is great because it's the cheapest of the 3 and in my experience the easiest. Sophia has the option to read the text or watch videos. Some classes will have 4 different people who created videos and they explain things in a different way which is quite helpful in subjects such as math.