What I posted on that other Viper thread ....
"MO, the Viper longbows are well made and shoot just fine. The only differences 'tween the standard and Deluxe are cosmetic. The Viper will exhibit reasonably decent arrow speed only if you replace the stock 16 strand Dacron string with a suitable string of low count modern fiber (such as 12 strands of Dyneema or Vectran, i.e. - Dynaflight'97, 450+, Dyneema'02, FastFlight, etc). A good modern fiber string length for the Viper is 64-1/2". The long limbs offer good shooting stability, but will reduce arrow speed and are more difficult to maneuver in the brush or up a tree stand.
IMO, there are better (faster, shorter) hybrid hunting longbows than the Viper, but even if purchased used most of them will command about $100 more. It's all about trade-offs and compromises, when spending money is in limited supply."
My Viper and Legend reviews (PDF reader required) ...
http://tradgang.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=31&t=000457