I will take the 300win over the 30-06.
I don't get where the recoil is anywhere more noticeable, if you can't handle it there are plenty of butt pads to choose from.
What is this some have wrote about the 300 being heavier? They run the same action, only the bolt face and chamber are different.
When I purchased a rifle, 300win, I did a lot of research on ballistics, cost and how I would shoot.
Ballistics - They are close, within 200 yards it does not matter on 90% of all game. past that there is a noticeable difference.
Using a ballistics chart I have using factory loaded ammo this is what is stated.
30-06 using 180 gr soft point.
Yards....300.......400.....500
FPS.......2009.....1804...1613
Ft. Lbs..1617......1301...1041
Drop......9.1.......36.9....55.5
300 Win using 180 gr soft point.
Yards...300........400.....500
FPS......2341......2135...1942
Ft. Lbs..2190......1823...1507
Drop......7...........20.1...40.9
If you look at the data there is a significant difference of power and velocity. I knew that I could make a longer shot easier if I had to with the 300 rather than the -06.
Plus, I can easily load down to -06 or 308 ballistics, still trying to find a sub sonic data for the 300 out of curiosity. But you can't ever get the 30-06 to be as powerful as the 300.
Cost - The ammo prices per box were within a couple of dollars, so not much at all, not enough to worry about. I also started reloading so it dropped the price much more, right around $30 for 50 for my specific hunting loads, 200 grain Nosler Accubond.
How I shoot - I hunt in an area where the shots can range from 10 feet, a buddy got his from that far with his -06, to well past 600 yards. Visibility is as far as your eyes can see. So I prefer the extra boost of the 300, if I am in the woods the .243 does me just fine.
I personally don't see anything wrong with either choice. I have a 1917 -06 right now I may use this year but am not positive, I may just trade it off. If you are in a heavy brush area your current rifle would be great or another lever in a bigger caliber. If you want to be different an AR10 would be a spectacular choice, 308, 243, or anything else that can fit the magwell.
Just make sure YOU are satisfied with what you buy.