Which used Snap On tool to purchase

I plan on getting into the SD training program, as I have been "old school and am starting into newer models.
I come from building and servicing older domestic and BMW models. I am starting to get into later models, mostly BMW & Mini and I am in need of a full function scanner, as well as training on how to use them and to properly diagnose the later model vehicles with more electronics than hardware ( ).

I run my own one-person shop and cannot currently justify a new scanner for the 1-in-5 later-model jobs that require a scanner that does more than just read the OBD-II and proprietary codes and track live with laggy/choppy data. Would you be able to recommend a used snap on scanner (I'm thinking, with a scope) that would be a good fit for the 2000s and 20-teeens BMW and Minis. My threshold is around $1000. I'm confused on all of the different snap-on models and generations.

Thank you,
Gordon Arnold
Otto At Werke

Snap on is not the first scanner to think of when you talk BMW/Mini, imo. No matter which model.