I have used both bullets in my .25-06 rifles and have settled on the Accubond. My .25-06's are normally used mostly for pronghorns, sometimes for mule deer, and rarely for whitetail deer. I use the same bullet in my wife's .257 Roberts that she uses mostly for whitetails and mule deer.
However, I do not agree with a couple of the previous posts when it comes to the .257" Partition. I have used it for close shots and it worked wonderfully well. It works for high impact velocities and also works very well for low impact velocities. A close range shot will have about the same result on game from both bullets.
The tip of the Partition takes a little bit of a pounding in the magazine and can flatten slightly. I have shot flattened tip bullets on the range and found almost no difference from the pretty ones on the target. As for the Accubond, in some older boxes of a few of the tips simply broke off completely but I think that is under control by the factory now. Both seem to have about the same weight retention.
Both are fine hunting bullets.