Well here are things for the OP to answer?
What bullets do you shoot the most of? And, that will answer the question!
The Sierra 5th has not been updated in a long time. But, then Sierra has not really come out with that many new bullets. So updates are really not needed. They have a separate section for 223 AR data which is good especially with the heavier bullets.
The Speer 14th is a manual. Speer does not sell that many rifle bullets. And, well pistol bullets are pretty much what I consider Generic.
The Nosler 6th is actually pretty new, but Nosler has halted distribution of their new 7th Edition due to major issues....If shoot Nosler bullets get this data from the source...
The Hornady 9th is fresh off the presses. Again, if you shoot Hornady this is the book...plus they have separate sections for Garands and AR's.
The Barnes 4th is again the best source of data for Barnes bullets.
The Swift manual again is best source of data for their bullets.
The VV Manual covers their powders with various mfgr's projecticles.
The Lee manual is not worth it, it covers a mix and match of bulelts.
The Berger is fresh off the press too, but it does not have data on their 338 cal bullets.....
With rifle data you have to respect the source components used to develop the data. The case used to develop data is a very important....so it is always good to have a lot of resources. Case in point if you had WW brass and were to base you load work up on Sierra data you might be hindering your work as Sierra used Federal brass. So you really have to heed the advice of reduce 10 percent and work up.
Rifle Bullets have different characteristics with respect to design so getting data from the mfgr is the SMARTEST move for a reloader. Handgun bullets are pretty much generic so data crosses over with out a lot of concerns. Now, when it comes to lead bullet data in Hornady and Speer is for SWAGED Bullets NOT HARD CAST LEAD. So the Lyman 49th is the best source for handgun data. As, with plated bullets one uses cast bullet data not jacked data.
Hodgdon ( IMR, Hodgdon, & Win), Alliant, Ramshot, VV, Accurate have web sites with a significant amout of data.
Bullet Mfgr's have data posted on their web sites, too. And, some have Ballisticians to field calls from you, also!
One can nver have too many manuals! There is a wealth of information in each manual!
The Quick Load software which is another tool to use!
There are so many resources......and copy cat reloading from the various forums is IDIOTIC. BE SAFE when working up loads for
SAFETY, ACCURACY, and RELIABILITY. Each gun is a rule unto itself. So your own home work!