I use 2 shakers in one of the chairs. I have another set to add to the other recliner, but have not added it yet. It can be fun for movies, but I find them distracting for music. I only power them on on special occasions. My Shakers

I think the advantage of the Aura is that they are small and easier to mount in individual chairs. The Butt kicker, although a superior product, is large and would be over kill, expense wise, in a single chair. I have a slab floor with pad and carpeting over it and my HT is in the living room, so adding a Butt Kicker in this configuration is difficult. Also, I can add two shakers to a chair in series for an 8 Ohm load when needed without significant cost.

Adding another 1000 watt amp to my system may require an additional circuit breaker as well. Also, I'm not sure how I would use the rubber isolators to the bottom of the runners of a recliner.