Best or Better is very subjective. Better than what ? Better for what ? Better when what ? Etc... There certainly are facts. Facts mean nothing if your preference is either one or the other. This is the case. Yes the 7x57 is great. The 7 mag, 7wsm, 7saum, 7stw, 7rum and 280 are all as excellent a choice IF they are what you want. Clearly all the above do not fit your niche for a cartridge profile therefore they are OUT. Some are close some are not. The two you chose are IMO classics as are some others. They are the only two in the short action non magnum category. Easy to shoot and on the pocket book. Also accurate. Can't go wrong with either.I’m not looking for THE BEST OVERALL. I’m just trying to gather information from knowledgeable and experienced shooters so that I can make the most informed decision as to which chambering will work better in MY APPLICATION. There will always be a best, or at least a better, option between different chamberings depending on the application AND personal preferences AND desired outcomes.