Ok so iv been in the market for a new pair of binos and have been saving for some vortex viper hd's and then came across a pair of razor 10x50s.the guy wants to trade me for my xdm 9mm 3.8 compact.at first I was excited about the trade but then realized they were the old razors.they are new but still not the hd razors.my question is are they better than the viper hd's and should I make the trade or hold off for the viper hd's?