Well, Sharpe and Naramore books are interesting to us old hands but there is very little in them that will be helpful to a new guy.

As ClarkE says, there is no 'best'; if there were it would dominate the market and none do that.

Data from all the mainline sources has been carefully tested and it makes no real difference if your manual was published by a bullet, powder or tool maker. Changing the firearm it's used in has a much larger effect on any book's suggested loads than the bullet, primer, case, etc. After 'start' loads we have to work up to our own max depending on pressure signs and going to ANY book's max load without careful and methodical load development is a potential path to destruction.

Most of us will agree that the Lyman, Hornady and Lee manuals have perhaps the most clearly written and well illustrated basic instructions and lots of good loading data too. Hodgedon's manuals probably have the widest range of loading data.