I'v never been a fan of any .300 Magnum. To me, they are a cassic "tweener"...niether fish nor fowl.
To me, the 30-06 is the "tweener" - stuck in between the 308 Win and the 300 magnums.
I still like the '06 and have a couple, but I'm more likely to grab a 308 or a 300 WSM.