I just purchased a Viper 6.5-20X by 50mm. A close friend has owned one for the last 2-3 years...not a lick of trouble. One of the forum sponsor's here has a tremendous sale on them:

http://www.cameralandny.com/optics/v...exviper6-20x44

You can get a 4-12X or the 6.5-20X for $249. I purchased a Nikon Buckmaster 4.5-14X SF a little over a year ago for $279. I think the Viper's glass is as good or better...plus it's a 30mm scope tube and has better turrets. CameraLand is a great place to order from BTW.

Good Luck...I don't think you'll be disappointed with a Viper.

Wayne