We have all had the paralysis by analysis problem at some point in all of this.... I know I did... My vote is the .308 based upon the basics you provided on what it will be used for. With that being said, there are a couple things that may change my vote.

What kind of game are you hunting?
Do you reload?

The 6.5 creed or the .260 Remington (which is what I went with) carry enough energy to take down an Elk (1500 Ft lbs) out to 400 yards using the 140 class bullets (I shoot the 143 ELD-X). So it too is a good all around cartridge... Has less recoil than .308 or 30-06 (I have a 30-06 for ELK myself).

As much as I like my .260 I still lean towards the 30-06 for big game, even though ballistics say the 6.5 round will get the job done. It just gives me greater piece of mind as I've seen the results with the 30-06. That may change down the road as I observe more results from my .260.

Anything smaller than an Elk, and the 6.5 Creed or .260 Rem is the clear winner in my book. Look at the ballistics for the .308 vs 6.5 Creed (even use a 180 gr. bullet for the .308 and a 140 gr. bullet from the 6.5) the down range ballistics will surprise you...

Just my .01,