There's a reason Cabela's and Bass Pro sold the Viper HDs for $299 and Razor HDs for $500-$600. I would never recommend paying regular prices for Vortex. You could buy a discontinued SIG Zulu 9 (11x44/9x45 same Kamakura factory in Japan as the Maven B.2s and Vortex Razor UHDs) for really cheap. They were selling at Midway USA for under $600 brand new. The new SIG Zulu 10s are also selling for cheaper too from some online retailers and phone calls get them for even cheaper since they can't advertise lower prices online.100% This fall I picked up 10x42 slc and razor hd 12x50. Even being lower magnification the slc offer a much better image. The razors aren't bad but they bounce around in my pickup now and the slc get to go on hunts.
Edit. These both replaced a set of 10x42 viper and I would not recommend those at all.