I can tell you my experience. I've got a 3x12x40 Tasco Mag IV I put on my .270 BDL in 1989 (first deer rifle; didn't have enough for a Leopold). I've put close to 200 rounds through it, and shot maybe 25 deer, a few hogs, a few turkey, and lots of paper. The scope has never failed me. It's been banged around some and in the rain some. I have had to tweak the sight settings only once in 15 years, and that is because I changed from Remington Core Lokts to Hornady Light Magnums and they shot to a different point of aim.
I don't know how a 1989 Tasco compares to a present day Tasco, but...every time I look at the Leopolds that I always told myself I would put on this rifle, I always think, why? If it ain't broke, don't fix it! I'd rather spend that $ on other guns, ammo, etc.etc.