Hiya guys I have just sold my archer NV,,to heavy for me,, so I was wondering what is the best add on to buy I shoot everything from rats to fox from about 8yds out to about 220yards (conditions dependant),, just wanted some all round feed back on different units if possible,, iv been told the nitesite wolf would be ideal and the nitesite viper is not enough,, there are people selling there own made units,, are they any good,, cheers,, phil