Timnterra,
You whittled it down to a couple of 6.5s. Here is an excellent article comparing the 6.5 Creedmore, 260 Rem and 6.5 x 47 Lapua :
https://demigodllc.com/articles/6.5-shootout-260-6.5x47-6.5-creedmoor/
One comment in the article is an important consideration:
"Anyone with a rifle in any one of these three calibers would be silly to ditch a working system to switch to another of them-- they are that similar. Make your choice based on component availability and price."