Pro 6 vs Ultra 6 Plus

B52hbuff wrote:
...it looks like Ultra 6 Plus is just a little higher performer. Do I read that right?

Yes, however, those numbers are based upon a single client accessing the ReadyNAS. When used is a multi-computer environment, the Pro 6's ethernet teaming capabilities can deliver read performance of 240 MB/s and write performance of 140 MB/s.

From http://home.bott.ca/webserver/?p=363

A single PC might not be able to max out the Pro, however, if you have multiple gigabit clients simultaneously reading and writing to the Pro, it will be able to keep up. Using 802.3ad LAG, the ReadyNAS Pro has achieved 240 MB/s read speeds and 140 MB/s write speeds when being accessed with multiple Macs.

FWIW, that information came from one of the developers.