Got the 4 ohm Hathor 1855 today, and had about 30 minutes to mess with it.
This thing can go REALLY low, and be REALLY clear while doing so. I found myself digging the sound of two ports plugged. I can imagine a Dub player going for all four ports open.
Overdrive sounds wonderfully smooth - much better than through tweeter equipped cabs I've used.
I love the sound of the switches in the "full nasty" position - it really sounds the cab's going to cut through a mix. I can't wait to give this thing a spin with the band.
It can get stupid loud without farting out. The limit light was flashing on my Shuttle 9.0, but speakers didn't sound like they were stressed at all. Hopefully the neighbors don't hate me now.
To top it off, its a lot easier to move around than I anticipated. The handles on the side plus the holes for the mid chamber make it easy to grab, and whole whole thing only weighs 14 lbs more than one of my old Genz Benz NeoX 112T cabs. I almost always needed a pair of those for anything other than a relatively low volume rehearsal.
Pics or it doesn't exist.