Things I liked:Clear; smooth operation; maintains accuracy at higher magnifications. Great choice for the Benjamin Marauder. Thanks, Pyramyd, for the suggestion. What others should know:Pyramyd sales and technical service is helpful, patient, and reliable, although phone waits are rather long.
Things I liked:Effective. What others should know:Gets pretty tiring if doing much shooting. Pretty expensive to have as a backup to a scuba tank and transfer valve. Scuba tank refills are the way to go.