Innova has never made anything like Gold Line. The look MIGHT be similar, but the feel of the plastic is entirely different. And the durability of Opto/Gold Line is well known for being bomb proof.
lol @ Opto/Gold Line being durable. Ive tried opto and gold line in multiples of 4 different molds, and the result is always the same: 2 rounds, pretty good stuff. After that the disc changes dramatically.