i for one use a broad spectrum of scopes , i use, tasco , simmons , bushnell , leupold , and have never really had any trouble with any of them , it just depends on how much money you have to spend , and what caliber , and what type of use , for a .270 deer rifle , i' de use a bushnell rifle scope for it myself unless it' s going to be used in hazardous rough , rugged terrain , then i' de opt to upgrade to a leupold simply because they can take more abuse , they will have to be rezeroed but , they won' t break quite as fast unless dropped scope side on a rock or something but , they won' t fog up as fast , or get a distorted image if they get wet or have water come down on them rather heavily ( waterproof ), but like i said it just depends on what use , what caliber , and how much money.
just my 2 cents worth
