1. What size subwoofer is most appealing to you? 8”, 10”, 12” or ??
While there's never any harm in going bigger, I think a 12" is plenty for most applications.
2. Do you prefer single our dual driver design, either active of with passive radiators?
Single, so far.
3. Do you like the sound of front firing or floor firing designs?
I've only heard a down firing once in an audition, but it was a noticeable change that I just didn't like. I'd prefer front firing.
4. In choosing between SPL or low frequency extension, which is attribute more important to you?
Extension, definitely. It's most important to just get down there first.
5. Do you prefer super compact (high pressure) subwoofers or are conventional (larger) designs more desirable?
I trust larger designs to be more regular.
6. Do you place your sub in a corner of the room or somewhere away from the wall?
Away from the wall, to the right in between my center and the couch.
7. Would you rather have a sub with a built in amplifier or a dedicated stand alone amplifier?
Built in, always, with any decent sub.
8. Would you rather have an Auto Room EQ system with a measuring microphone or manual parametric controls allow you to set the EQ yourself?
The most ideal would be to have both available, but outside of that, manual controls are the most important.
9. What price range do you feel is the most desirable for a high performance subwoofer system (be realistic! )
Most desirable would be around 400-700. A small range, but a very popular one.
10. What color and finish is the most desirable to you? If you had the choice of two finishes, what would they be?
Personally, a dark glossy cherry is ideal. So many cherry finishes are just too light or plain, and I'd gaga for a proper dark cherry.