Well I reran Audyssey MultEQ twice more and made some adjustments and am now at -5 with the sub volume between 9 and 10. I may run it one more time after I adjust closer to 9 but I am really happy with the overall bass in my room.
It was a pain, but I compared a number of bass heavy scenes from Kung Fu Panda 1-2, Tron, Master and Commander, Empire Strikes Back, and Despicable Me, all on Blu on the VTF-15H vs the PA-150. The sweet spot in my room seems to be the right frog corner, with the HSU a little further out from the wall. No comparison (as there shouldn't be when comparing a $1k shipped sub to a $350 shipped sub). The PA-150 actually tries in the upper bass regions but runs out of steam with lower frequency. Just a guess but you would probably need 3-4 PA-150's to match or beat one 15H.
As I said earlier, the 15H is just effortless. I cannot even imagine what a Seaton Subversive would do in my room.
A few other notes. The packaging was top notch, HSU gives you some great documentation, customer service, and the fit and finish on the sub is light years from the bed liner finish on my eD sub.