Our company policy is to use brakes over reverse. Apparentely for our company the engine cost is more than the brake wear cost. Company policy for the use of autobrakes = pilots discretion including OFF. Of course the FCTM recommendations when A/B should be used are in there also
We regularely land at airports with runways more than 3000 meters. I usually put the A/B OFF and use idle reverse. The airplane stops just fine in about 2500 meters.
Dry runways: A/B settings with idle reverse except if required for brake cooling.
Wet runways: A/B setting with up to full reverse.
Contaminated: A/B setting with max reverse.
As alreay mentioned by de facto you can look up in the QRH when use of reverse has initially a higher decel rate than the brakes. In the section normal landing distances you have a column "reverse thrust adj"