Very surprised that Eheim and Marineland, two of the most common and well-liked filters, are not in the list. Look at the results, see how many people are selecting "other", nearly 30% at the time of my post? This is an indication that the poll is flawed. Correctly designed, the available choices would cover more than 90% of the responses, with "other" as a small minority of responses.
If this is a repeat of an earlier poll, these flaws should have been addressed before repeating. Maybe next time?
If it really IS all about helping people, then it is much more helpful to include the most common choices so people can actually SEE what brands are more popular, instead of lumping many of the popular choices together into a single category.
I use Lustar HydroSponges, so "other" is my response.
Here is my suggestion for choices in the next poll:
Aquaclear
Aqueon
Eheim
Fluval
HydroSponge
Marineland
PennPlax
Rena
Whisper