Personally, the .300 H&H is as good as either of the two new cartridges you mentioned....the difference is truly minimal and the Classic from Remington is a fine gun. I have a classic in .375 H&H and would love the companion piece in .300 H&H....but not for the $650

It's your gun and your money friend....do as you wish, but in my opinion, you've got a keeper right now!!