I haven't checked out the upswing tournament masterclass but have RYE masterclass and Pokernerve's Road To Success.
My thoughts are:
- RYE starts at quite a high level which would be difficult to grasp for a beginner. You have some experience with poker so this may or may not be an issue - it depends on your knowledge level regarding overall poker and MTTs.
- PokerNerve starts at the very basics (such as hand values) which is great for a complete beginner. But someone who has had some experience playing 50nl online the course might start off quite slow. Although the later lessons are quite advanced, make use of solvers and go into a lot of detail. Also, Kelvin makes pretty entertaining videos in comparison to other poker training I have seen. Overall, there is a lot of great content in the course and as a cash game player changing to MTTs, you will learn a lot.
- PokerNerve also has the free trial which you don't have with the other courses so you can try it out and you can also find some discount codes online for 30% off (for example
https://howtoplaypokerinfo.com/poker-training-sites/). The other courses only have a 30-day money back guarantee and it's at their discretion whether they will actually give you your money back (not liking it is not a good enough reason most of the time).
Overall, both courses are very good and will have a positive ROI for you as a cash game player in particular. However, it depends on your skill level which is more suitable for you. You could out the Road To Success's free trial, and if you don't like it, you can try our RYE or Upswings course without any hassle.