REL Q150 E vs. Sunfire Sig. Jr. Subs

The REL subs are great. Very easy to integrate with any system. Can be run both as a high end audio sub through the high pass filter and for HT through the low pass filter at the same time without resetting. A lot of subs have a fixed high pass filter (cannot be adjusted). Are you talking about the Q100E ??? Not familiar with a 150 unless a new model?
I have two RELs. A Q100E with my HT in the family room and a Storm III in my play room with the audio system. There is a Q100E listed in the classified here right now.

All REL subs are good for both audio and HT, however the Q subs were designed with HT in mind and the ST subs (STratus, STorm, etc) with audio in mind. The Q100E has a slam/depth switch so you can get more slam for the movies and more depth for music.