I can only guess that nobody on this forum has heard them all and I haven't heard any of them but here is my 2 cents anyway. I would take a guess from reviews of them that the HSU is the better bang for the buck with the SVS close behind and the EP125 last.

I think you couldn't lose buying any of the subs listed, even the EP125 gets good reviews, just not in the same league as the others.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70