the 5x20x50 HD is very clear at high power, my friend has a Nightforce, i believe the shv in the same power range and to us and 3 different people at looking through them side buy side thought the swfa was clearer. i also have the Swfa 3-15x40, witch is not an HDscope as is the 5-20x50. i ode red 2 vortex viper 4-16x44 lrh for a friend and my cousin and the sofa 3-15 was much better glass than the vortex, at high end of the power range you could really tell the difference. and they are built way more sturdy and robust. so that being said the 3-15x40 sofa is a great scope with very very good glass, ftp, and great turrets and build quality, and the swfa 5-20x50 HD is evan better glass than the 3-15x40, a very noticeable difference. that being said I have shot all day with the 3-15 , and out to and beyond 1000' and never felt like i was being short changed on glass or make me wish I had my other scope . IMHO they are the best glass, repeatability, and durability you can get in a scope unless you at least double the money you are putting out then add in the fact that they're FFP and it's very hard to beat them.