I have had Tasco's on and off for over 35 years. I remember when the World class first hit the shelves I believe in early mid 80s. I bought a 2X-7X-32(little pronhorn on its turret..lol), my buddy the 3X-9X-40(Whitetail buck on the turret, thought they got the power range/game referance wrong but anyhow.....).
I felt they where somewhere betwen the Bushnell Banners and the Scopechiefs of the day and these were reliable bright scopes as well. I'd say the old World class were equivalent to todays Bushnell 3200 maybe down a little.
I just sold mine last year on a H&R 700. Had it on many rifles over the years(25+) and it still hadn't fogged or had zeroing/ recticle issues.
Todays Tasco line-up does not impress at all.