I cant speak for the Diavari, but I can speak for the NF. It has excellent clarity and in good light conditions - no mirage - I can see 308 cal holes in a targets out to 500 yds on 22x. The low end of 5.5x is plenty to use on deer size game well beyond 1000 yds. In low light, 30 - 40 min after sunset I can easily see game on 22x. With just a liitle moon light I can make out game out to severl hundred yards on the 5.5x (I dont shoot game in moon light, but coyotes might be a consideration) That is more than enough optical quality for me for hunting purposes. For a LR "Hunting" scope, good optics is important, but it is down the list of priorites. Precision, repeatability, reliability and ruggedness are most critical to me and it is just about impossible to beat a NF in those areas. My NF has felt 250 rounds from a 300 RUM, 200 from a 300 WSM
and 200 from a 25-06. I expect it could take thousands more recoil from my RUM without being affected. I have also landed hard on it twice while hunting, being tripped up once and slipping on ice another time.
NF is the scope for me.