I've hunted with all three and was not disappoint with any of em. My favorite is the 7 rem mag. It just plain does a good job. My longest shot dropping an elk was with the 7 rem. 500 yd and one shot. Now after saying all that I am starting to be partial to my 300 win mag. I found a 130 gr (3450fps) load for long flat shots and have worked up a great 190gr load for meaner animal. If I ever get a chance to hunt big bear I'm sure the 300 win will have a load for the 220 gr bullets that will do the job.