Best Musical Sub... Originally posted in 2014???

I would like to know from the Audiophiles on this site that have had several sub-woofer's augmenting their main speakers over the years. What you think is the best sub-woofer or sub-woofer's are. Given its a 6 year old post... figured I'd ask for new opinions. Also ask are there any new brands or tech that are a must listen to? Given Class D and DSP tech has changed a bit. Keep in mind I'd like to keep this for music only whether it be a single, stereo, or swarm set up. Please chime in if you are happy with you current foundation 80-15 HZ and what your X over level is. Also opinions on High passing your main speakers would be helpful. I love the thought of relief for the main speakers and primary amp. I personally have yet to find a way to achieve that without any coloration or electronic haze. 

My favs to date are

Kinergetics SW 800's (5/10's)
Audio Kinesis Swarm  (4/10's)
Muse model 18 (2/10's)
Revel B15's (1/15)
Vadersteen V2 (3/8's)
ACI Titan's (1/12)
HSU Sealed ULS (1/15)
Rel Storm (1/10)

Allgood- Njoy the music

ps Hope This Corona Virus has all of you safe and worst case gives you a "Corona Beer" hangover. haha. Seriously Prayers to anyone affected by this.