...........................................................................................................
@Damagecase , That depends on how you end up using the Omni or any VapCap. You can fine-tune the airflow with the Omni but you can achieve roughly the same adjustment with any of the other VCs.
With the airflow hole closed, you get maximum vapor density as no additional air is added.
With the airflow hole wide open, you get maximum vapor coolness and smoothness as the most cool air is added to the vapor stream.
IMO, where the Omni excels is the in-between airflow as it can be adjusted very finely. With non-Omni units, you have the tiny hole to feather in between open and closed, a delicate operation. But, and it's a big BUT, 99% of the time I go full open or full closed, so that's easy-peazy to do on any VC. Thus, the real-life Omni advantage can be small.
Omni is kind of a luxury model. If you have the $$ and want to go big, go for it.
If you want to test the waters and see how you end up using the airflow hole, you can always start with the $50 M and after experimenting, then decide what other model best fits your use....
The good news is that you can't go wrong with whatever VC you buy