(Which of these parameters would be most important to you?
a. Barrel length (accuracy, muzzle velocity)
b. Weight (recoil reduction, less "shivering")
c. Bipod (if used in prone position
d. Colour of weapon (matt black for reduced visibility)
e. Sighting (night scope facility? High vs Low magnification)
f. Magazine capacity
g. Calibre (impact energy)
h. Cyclic rate (would it be important, or would bolt-action do?)
What other parameters could influence your choice?
)
Personally, I like this one:

The Accuracy International AW50:
http://home.swipnet.se/longrange/ACCURA ... 0%20AW.htm