I have owned two Huskemaw 5x20 scopes, one, the standard model, the other a Blue Diamond. After a few years of extensive use, both have performed perfectly. As to optical quality, I have also found it to be excellent and it's hard to see any optical quality difference between the two models. I like the lighter weight and shorter length compared to my Nightforces. They look and feel nicely balanced on my Cooper 520, and Savage LRH, 6.5x284 rifles. The Blue Diamond has a slightly different reticle, with 10 vs 5, one minute windage markers on the horizontal wire. The blue turrets are far easier to read in low light conditions compared to those on any other of the scopes I own. At first I didn't like the color, but being far sighted, now use the Blue turrets on my standard model as well. A while back I took a bad fall and hit the bell of my Blue Diamond so hard that the front scope base screws were bent and the scope base pulled slightly off the Cooper's receiver. I thought for sure the scope had to be damaged. I replaced both mounts, fully tested the scope, and found no damage at all. With over a dozen good kills on deer and antelope between 500 and 1000 yards, I have developed a high level of confidence
using these scopes.