I voted for Federal because thats what I'm now using in my .25-06 loads. The Federal 210M Gold Metal Match.
I've used Winchester LR Large Rifle, they worked very well in a lot of the loads that I worked up. I've even tried the Winchester LRM Large Rifle Magnum primers but could never get the groups the way I wanted them consistantly.
In my Handguns I us the CCI 350 Large Pistol Magnum primers for every thing and have had wonderful results with them.
What can I say, the poll only let me pick one, so I did.