Do you guys buy the manufacturer books for each brand of bullet you shoot?

I have only fed my .308 Barnes TTSX (hunting) and Hornady Interlocks (practice). Bought the Barnes and Hornady manuals when I started loading and they have served me well.

I am going outside those brands (Sierra and Berger) for my 25-06 and am torn on buying the Sierra (which is older) and Berger (which would be for just the 115VLD) manuals.

Thoughts?