I use and like:
DPA UA0896 | indoor as hvac windscreen
Shure A81WS | outdoor festival
| indoor just as smoke screens
Not sure what these are from, I've had 'em forever - but they look like the B5s. Little small jobbies that help for smoke and for venues in which I know the ventilation systems won't be a huge problem, i.e. m not in the direct blast from the vents.