I can give my experinace on the $400 subject, but just keep in mind this is "my opinion"

. If $400 is the TOP the OP has to spend then the PA-150 gets my vote. Now... if the OP is willing to spend another $100 then I would suggest the Outlaw Plus as Cel4145 mentioned. Heres what I have had and have....
Had...
Dual Pl-200's = Great units for the price of $250/260, so I had no regrets as they performed quite well at the time for my HT area. I read Ricci's test results last year for the PA-150 so I thought I would order that to add another.
Had Dual Pl's & have PA-150...
I believe the Pl's "maybe" would dig a bit deeper in the LF but it was hard to tell without a SPL meter at the time but when the LF would hit around the 30(+/-) mark is where the PA would shine over the PL's in a big way. To me it was close enough to say "it was a night & day differnace" so I will just leave it at that.
Have Pa-150 & Outlaw EX...
When it comes to LF the Outlaw outperforms the PA-150 without a doubt. You can feel the bass without hearing it is the best way to descibe it. When it gets into the mid bass as I will call it say 35 & up is where the PA will shine, not a night & day differnace by no means but to me I would say the PA has more "umph"... or at least it seems like it to me anyhow.
For now I will just leave it at that as I have to head to work. Have a great day!