I haven't tried the 6.5 Creedmoor, but definitely like the 6.5's. My go to rifle for many years has been a 264 win mag built off a Winchester M70 action. Myself and others have taken many deer and antelope with it over the years. I've used 140gr accubonds at 2950fps, and more recently the 140gr Berger VLD bullets loaded to 2914fps. Both have performed very well on game although differently. I never kept a 140gr accubond in an animal except once on a muley. The bullet entered at the last rib and ended up in the neck under the hide, only shot I was going to get on a 200" deer. When I started shooting the rifle at paper and steel past 500yds I switched to the Bergers and immediately saw my first round hits go up. I haven't shot game with it that far out, but even at shorter ranges knowing I have that level of accuracy increases my confidence. I have yet to see a Berger exit anything but a broadside antelope, but nothing has went more than a few feet from where it was shot either. I hit a really big whitetail a little to far back once, got the very back of the lungs, and the Berger dumped him quickly where a slower expanding bullet may not have done the job that fast. With most of the bullets available, the 6.5's do really well in the wind, penetrate, and are easy on the shoulder. All winners in my book.
I got a box of 143gr ELD-X bullets to try in my rifle too, they may be the perfect blend of my two favorites. Hope they shoot well in my rifle, fly like a Berger and perform like an accubond.