TDK are pretty much the same as Memorex, usually Ritek or CMC. In Aus, the DVD-R are usually TTH02 made by CMC, and the +R are CMCMAGM01, same as the Memorex. Unless you get the Made in India ones, which are TDK003.
But as I said, 100pk of Verbs at Tandy are like $32, which is cheaper per disk than the TDK Gold packs I’ve seen around, so I’d stick with those.