I have Speer 5-8 & 13, Lyman 44, 47-49, Phil Sharpe's book on reloading with the data, both Lee's a bunch of powder manufacturer's printed material, Sierra's old manual, and I am trying to think of any others off the top of my head.
I will be honest though, I seldom use any but the Speer #8 anymore. I read all of the newer ones but they produce such wimpy loads, I don't bother with them much anymore.
As far as data goes, I have a subscription to Handloader Magazine and LoadData.com. I also have Reloader's Reference software and I need nothing else. Most of my loadings though are for handgun or handgun chambered carbines. I do load for 223 and 30/06 but those loads are time tested and I need nothing else for them.
FWIW