PrepScholar vs Magoosh

Hi. I will take the SATs in June 2018. I’m an Asian student and belong to the lower economic strata. My country’s currency is very weak compared to the US Dollar so I want to do well on the test on my first attempt so as to avoid paying for it multiple times. I am torn between PrepScholar and Magoosh. Since I don’t want to buy prep guides ($$) and depend solely on online coaching, which one is more intensive? The harder the better. Suggestions will be greatly appreciated.
Thank You