Subwoofer suggestion

Two subs correctly placed will help with the room modes and standing waves that all rooms have.Correct placement is more important than choosing which brand is *best*.You can research this before making a decision. The majority of bass in music goes no lower than 40hz.

And to be more accurate, the PC12 was $1350 new in 2013. The ASW855 retailed $2200 new.

@hawkrider00 Here are two reviews from the same time period that quote the retail prices as $3000 and $949 for the 855 and PC12, respectively. Either way, to say the 855 outperforms the PC12 is, well, duh.

http://www.soundstagexperience.com/equipment/svs_pc12_plus.htm#:~:text=With%20this%20model%2C%20SVS%20literally,%241798%20will%20buy%20you%20two.

https://www.kenrockwell.com/audio/b-w/asw850.htm

Even at $2200, for that price you could get two SVS SB3000s. Now that’d be a more interesting, useful, and relevant comparison and truly apples to apples. 

@kraftwerkturbo   Would 2 subs placed close to the main speakers also allow higher low pass setting? Thinking using very small satelites that struggle at higher output levels and 80 Hz.

They might? The middle of the room next to the speaker location is typically within the rooms null.  -6dB sub-bass speakers dramatic roll off seems to allow them to work within room nulls. The crossover might be the first adjustment in blending with the satellite pair. 

-3dB subwoofers lowest frequencies struggle when placed in a room null. Subwoofers usually give their most detailed performance and disappearing when positioned within the rooms greatest standing wave bass mode.