I have not heard them before, so I am kind of going in a little blind. My number one priority is portability, number 2 was vertical (also is a component of portability). I was looking for hi fi as well - something that could be relatively flat and work with a number of preamps.
I tried a number of cabs before this - Rev Sound, Hartke, Barefaced, and most recently Markbass Transporter series, which I had been using for awhile. These are essentially replacements for the MBs. I was very happy with them, but these are so much lighter.
I'll let you know what I think!