My only real experience is with asherman, but my most recent training really emphasized using non-vented and just dealing with the tension pnuemothorax when/if it happens. Slapping a NV halo takes way less time than placing an asherman properly.
I keep a SOF-T I like the way they lock into the delta ring, stable, but easy to adjust.
Swat-t...meh, like @AtlMedic said, they do make a great pressure bandage.
I like the concept of the RATS, but I don't have any real experience with it.
Whether you want to admit it or not: If you engage in shooting sports or are in a profession which requires carrying a firearm, there is a very real threat of needing chest seals.
What kind do you use and why?
Asherman? Bolin? Hyfin? Halo? Other?
Some food for thought...
Legit study, basically says they're all really good, so don't go brand blind and spend more than you need to.
https://www.ncbi.nlm.nih.gov/pubmed/23883900