I vote for the 300WSM simply because thats the only 300 magnum i have had the pleasure of shooting, i am sure i would feel different (or not) if i owned and or hunted with any other of the 300's but my 300WSM is the proverbial antler assassin. working the bolt on my 300WSM for a follow-up shot is lightning fast, it seems to be much faster than a 270 winchester (long action)