ive been running diamondback as my "value optic" for several years now. i own a handful in the 4-12x40 and 2 of the 1.75-5x32 of them and just picked up one of the new HD models for my creed upper.
for the $ the glass is quite clear & has excellent low light coatings - which is critical for me as i typically hunt in the woods, and without a good coating would lose the last ~20-30ish mins of legal hunting time due to being unable to identify animals in the pre-dark conditions.
on the ones i have in hand, clicks are consistent and repeatable, return to zero has been true and continues to be so. my older models go back 8 years or so at this point. a zero stop feature would be nice for easier return to zero, but like i said.. "value optic"