I think all the models I listed use the pioneer chipset
I use to use RIDATA media till I was warned away from using them after quality dropped after the move of the factory to China.
I now use Verbatim, I bought a cake tin of 50 16x 4.7gig ( dvd5) for $17
I still have some RiData DL media left, Got them on sale , $2 - $5 each media is too much for me, right now, reminds me of when I got my first 2x cd burner. Back then blank CDs were right around $2.00 each.