Reverse is a very useful braking method on slippery runways or when you have a short turnaround combined with short runway (provided noise-abatement procedures allow).
Remember that reverse effectiveness reduces with reducing speed and stow them by 60kts. unless necessary for stopping the aircraft or skidding.
ALso, and that is something a lot of our colleges omit, make sure that both reversers actually work correctly by putting them in first detent immediately after touch-down (remember, they are the most effective when your speed is still high) and only then select the amount you deem needed.
In my opinion, there should be an SOP where the PM calls "Both reversers normal".
Also remember that when you have autobrake selected, putting more reverse will NOT reduce your landing distance, it will merely reduce the brake pressure. (autobrake measures decelleration ).
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