Now that I finally have my cabling sorted out, the EP350 is doinga great job on the bass that it puts out. I played my favourite LOTR scenes, the mines of Moria, and it does a great job on the cave troll battle and the Balrog scenes.
Now, I havn't played with positioning yet and havn't tried corner loading to boost the low bass, but its not shaking the room yet.
In the cave troll scene, when the troll does its stone crushing with the hammer and when it tries to stomp on people, the bass that is there is so believable that you
expect the whole floor to shake because a cave troll just stomped on it.
Although I wanted the floor to shake, I'm glad it dosn't as that would mean that it (and the walls) would be shaking for the neighbours as well.
The growl of the Balrog when it first appears is really cool too!
I think that you will get that low bass shaking with the EP500 (and even more with the 600).
Now, if your budget is in the EP500 range and you want that visceral rumbling feeling, you should also consider the SVS PB13 Ultra. It hits really low, and from some of the reviews I have read here and elswhere, it hits really hard in movies.
I have not listened to the EP500/600 or PB13 and am only going by what I have read.
What I would do is see which of the above subs you might be able to audition locally to see if they give you what you are looking for.
I still love my EP350 and am looking forward to getting it dialed in properly.