I use both Sierra GameKing and Hornady SST, depending on what's available when I buy bullets. Both are very good in my opinion.
I was loading recently for a .25-06 and had a stock of each brand in the 117 grain persuasion. Using the same powder and primer, the 117 Hornady gave me 2870 fps and the 117 Sierra gave me 2797 fps. I doubt that a whitetail deer could tell the difference and I reference this only to remind us that the two bullets are different.