Greenbay, I think it all depends on the type of shooting you will be doing with the rifle...
When I was shooting a lot of action competitions, my accuracy needs involved keeping my shots in a 4"x6" square at 15-40 yards, as fast as I could pull the trigger for up to 40 rounds...
When I'm shooting Prairie Dogs at 300+ yards, basically a 2"x9" target, my accuracy needs are a lot different and I'll take more time and effort in barrel care...as far as overheating, breakin, etc...
If it's a 'hunting' firearm, where my daily shots will be limited to 2 or3 in the whole day, I don't even consider it to be a factor..and I don't spend the money on a high quality barrel for the activity...
If I were shooting "Bench" type competition where a thousandth of an inch in the group makes a difference, then that barrel is treated really good..and I'm not a good enough shot to play with the 'big boys'...