Like jcroy wrote, there are not many chipset-manufacturers left. I guess only MTK and Renesas.
MTK was very cheap in the past, so LiteOn switched in year 2000 from popular Sanyo-Chipsets to cheap MTK.
Some years later the copy protection Safedisc V2.5x came out and randomly the writers with MTK-chipset were the only ones which can make a 1:1-copy. Against the statements of the Liteon-fanatics Liteon doesn´t use MTK to please the users for SD 2.5x (SD2.5x doesn´t exist in the time Liteon switched to MTK), it was only because of the price.
The former SD2.0 was for a short time only to backup with MTK and Philips-chipsets. Philips-based writers were hyped to heaven at this moment, even if it were very picky with media. After SD2.5x was released Philips were -again- one of the most hated writers
LG and Mitsumi used OTI-chips which wasn´t very exiting, but some LG-CD-writers offers good writing-quality. Cyberdrive used also OTI. Maybe the biggest thing with OTI was the 54x-Mitsumi-writer, the fastest in theory.
Sanyo was long time ago the benchmark and the first one with Buffer Underrun protection, called Burn Proof, but Sanyo was expensive.
Some Acer/Benq used ALi in some drives, but the CD-writers weren´t good at writing quality, but some ppl say the error-correction was very good.
Panasonic-chipsets were IMHO the first ones with Lightscribe, LG used it often for the “L”-models, without Lightscribe “N”-models they use mostly Renesas.
Nexperia-chipsets were used for Philips/Benq-writers (except some models like Benq 1670) and known for good writing-quality and advanced scan-features in CD-Speed.
There are also CD-RW-drives with Ricoh-chipset, but I have less experience with that because I never was pleased with Ricoh because the drives were very picky with media, mabe someone remembers the typical error “Medium Speed Error”
There are maybe some other points which are different between the chipsets like supported burn speeds, burn methodes (CAV, PC-CAV, Z-CLV) but I´m not sure is it only chipset-related or depend it more on FW.
Maybe someone remember more than me