As for Sony media - can't say that I have any great positive or negative things to say about it.
As with many other shrinkwraps, Sony doesn't make their own DVD media. Years ago, they used to be OK, especially if the label stated "Made in Japan" (aka TY). Dunno where they get their discs today, tho'
I personally prefer Verbatim media. Next to Taiyo Yuden DVDs, they are hands down the most reliable quality.
There's a bit of a misconception here...Verbatim's Life and Value lines are regarded as garbage. In addition, Verbatim also switches suppliers like many other vendors: there have been numerous product listings on newegg over the years where a specific SKU will get nothing but praise for months (made in UAE or whatever) and then suddenly get hammered by reviewers (made in India, etc). So it can be a crapshoot.
I gave up tracking quality many years ago....I just go to rima and get TY, go about my day, la-dee-da-dee-dahhh, not a care in the world...