Stainless vs matte boils down to personal preference. True the SS is a little more forgiving, thoughit still requires oiling/care. Accuracy and function IME are the same with both products. Usually on black synthetic stock I like a SS(looks) however the SPS matte black on the new stock looks pretty sharp as well. Really is a wash on these 2 for me on the looks department. Though that is me not you so pick which ever finish you prefer. As far as glare I have never found a ss or even the traditional high gloss blue(which gives off the most glare) to be of concern with a biggame rifle. Shotgun in a goose pit sure but in the woods with game that don't solely rely on sight...NAH!

To your quander over cartridges, they are both well suited. Can't go wrong with either. If you'd practice more with cheaper ammo then buy the 06'. Though bare in mind while a box of 12 shells may shoot good it can just as easily not either. Unfortunatley you won't know that until you shoot the rifle in regards to preferences. Though all things equal comparable shells will be less for the 06 andbeing ownership costs seems higher on your list then mine go with what your guts telling you. Don't think anybody would advise you to buy something you won't shoot as much, that wouldn't make any sense. Though don't buy wanting another, either.

As to the comment about the 7mm rem mag being picky I can't say I share this experience. I have loaded for a number and not found them worse than other cartridges to develop loads. My personal 7mm rem mag is the opposite, almost to likable and makes the slim down based on accuracy mooted.A problem I certainly don't mind having. ThoughI have ran into guns that are picky, this isn't secluded to a cartridge but rather the rifle or bore you may be dealing with. Luck of the draw I guess.