[CoasterMatt]

So far, my experience with the 8 core Pro hasn't been very good.

Apple put WAAAAY too much thermal compound between the heatsink and the processors on many units, and it literally oozed out on to the motherboard.
I saw (and got to correct) the problem on a friend's system, but I wonder how many out there will be working along, and right in the middle of a big rendering project gonk out because of thermal issues? Pro system, with some seriously amateur construction issues.

I've been inside 2 other 8 core mac pros, and they had airflow issues that might not be a big deal now, but give a year or 2, and if that's what they all look like inside, I wouldn't doubt we see a bunch of Apple forums going crazy.