I have all the calibers mentioned here 6 creed , 6.5 and the The 6 Dasher. Do some research they all have their pluses and minuses.
6.5 more recoil little more difficult to spot misses from awkward positions but fairly good barrel life.
6 creed low recoil flat shooting low recoil cheap brass or lapua brass downside is its a barrel eater
6 Dasher super low recoil, accurate with any load you put in it, I get 3020 fps with the 105's good barrel life for a 6mm Downside doesn't feed great in all actions might need bolt face bushed small primer round
Dasher is my favorite