Both are very good rifles. If you like easy field stripping and maintenance then the 597 is for you. With the 597, you also have the ability to change out a few parts with aftermarket parts (not nearly as extensive as ruger).
Both rifles are capable of shooting 1inch at 50 yards out of box.
Yes, there have been some bad barrels. Seems remington had a quality control problem on a few barrel runs. However, they have been great at replacing the bad barrels and getting shooters back up and running.
Honestly, if you can find a stock grey 597, it will perform the same as teh carbon fiber barrel. However, if you just gotta have the thumbhole stock, then go for it :bthumb:
Ftf - if you mean failure to feed, not really. As long as you are using Gen3 mags, you'll have no problems. If you are talking about failure to fire, depends on the ammo. Some bulk ammo has issues due to low powder charge. Most people, including myself have no issues whatsoever.
Either rifle is a win