Renatus, Sherman Ragland's course or Noteschool, who's better?

Hello BP community,

New investor here, I know the bigger pockets community is somewhat against paying for programs like this, but the learning curve with getting into real estate without a mentor is kind of high. 

So, aside from finding a mentor (which seems harder than learning real estate itself) what is the community's opinion on Noteschool, Sherman Ragland's 21 day course or Renatus?  

Through local meetups I've learned about all 3 of these companies and each one claims to be the best of the best in REI education.

They all ask for a somewhat large monetary investment (Sherman Ragland seems to be the cheapest and maybe the best reviewed thus far).

If I'm going to spend money, I want to spend it on the one that actually intends on helping me. 

Anyone's experience with either would be greatly appreciated.