Firstly you have owned 9-10 adjustable razors. We'll assume a few double ups here as that is a lot (personally 11 but of multiples).
Secondly flippant statement to start the conversation flow which I've been drawn into

There are a lot of razors that are overrated and very expensive ones are included in that, as a sub $50 can be a better shaver for some.
Again all users mileage varies due to experience, technique, face type and conditions.
IMHO the posters have strayed from the original question and that is what is great for a beginner and why.
Adjustables are great razors but technique should be gained first with a fixed configuration/setting so the user hones their skills.
This can be achieve with an adjustable as long as they stay on one setting. Most beginners would stray and adjust them hence the direction to suggest a three/two piece which can also be cheaper and new.
Silm or Black Beauties are affordable razors but not shiny and new though a beginner can better one's technique as long as they are disciplined.
Would say most users here on this forum have used a silm and/or black beauty and have an emotional attachment to them.
Because after hours of research/searching it was their first vintage razor/adjustable and they honed a reliable technique with one and as we know it is different to a fix configuration razor. So keeping them to use as a standard for comparing shaves or blades and/or when we need a milder shave we dial it back to '1'.
As someone else mentioned due to cost of the QShave (Futur copy) Adjustable and that you can get it engraved/personalised it could be highly recommended for a beginner for cost and flexibility.