It's a bold statement and likely to stir things up - especially from the '06 devotees. But, I'll make the statement anyway: I personally think this is the greatest all around North American big game cartridge ever. At first I wanted nothing to do with any short magnum, but after having these things thrown in my face in every sporting publication I decided to give them a look when it was time for a new rifle.
Most important (to me anyway), it can handle anything from antelope to moose with no inadequacy in distance capability or bullet weight. Ammunition is now available everywhere and most rifles tend to shoot most ammuntion well - which is more than I can say for my experiences with old granddad of the 30 calibers.
And while it provides nothing new ballistically speaking over any of the 300 family, it does burn less powder and give those ballisitic characteristics in a nice lightweight and compact package for those who like to haunt the high country or for those who have discovered the pleasure of hunting with lighter rifles.
And just as important as anything and a point I touched at the start, these things are just plain accurate. It is not difficult to find sub MOA loads in a variety of bullet types and weights.
The only downside I've see is that recoil can be stiff (but tolerable) and can be tamed down considerably with a good recoil pad. I wouldn't buy one for my twelve year old, but an experienced and capable shooter would not have any issues.
This is just an opinion from a one gun kind of hunter. If your are in the market for that perfect all-arounder and are a confident, capable rifle handler, this one might just be the blue ribbon winner of all time.