I spent a couple more hours ABing the Berg and the MA Sunday. Here is what I found.
Ease of transport:
The nod easily goes to the Berg. With its taller/slimmer form factor, good handle placement, and lighter weight, it is a breeze to move.
Overall volume:
The CN212 takes this category as well, but with the built in HPF of the Streamliner the two are VERY close. It would be safe to say that if the 212 will cover your gigs, the 85 will as well.
Dispersion:
As you would guess, this goes to the 85. I did 180 degree sweep outside at a distance of 20ft. There was very little change in tone even 20 ft directly to the side of the cab. The CN212 did much better in this area than I anticipated, but the 85 reigns supreme.
Tone is such a subjective thing it is very hard to rate it. What I can do at this point is say how each cab matches up with the Streamliner.
CN212/STM 900 -
Really a fantastic matchup. The baked in voicing of each seems to mesh perfectly. I cut a bit of bass and boost the mids at 2.5k, fat/punchy/articulate/warm. The Berg adds some character to the mids that just sounds right. I would like to try the tone hammer with this one, but I am satisfied with my Benz.
MAS85/STM900-
Huge/fat/warm. The Streamliner tends to add warmth and thickness to whatever cab it's plugged into. The 85 is warm and thick to begin with. Pbass with flats presented the most glorious blues tone I had ever heard while in the mix. Finger style rock tone is a bit lacking in midrange bite. This very well could be the head. Mike posted a graph showing that the 85 is very flat in response much like the Thunderchild. Several have mentioned the TC/Streamliner matchup being too much of a good thing, I think this may be the same case. I would really like to try a more modern sounding head with this cab, maybe a shuttle max 9.2