The HHA's are really easy to use. If I ever get a bow set up just for targets, I'll definitely look into the Viper line. I just can't really justify spending that much now, considering I already have the HHA. I just need to dish out the $75 for the lense. You suggest the 4X? Because there is also a 2X and 6X available, 4 just seemed to be a happy medium.