Pioneer has good drives, good speed and price.
Plextor is the best brand.
Some DVD drives offer a digital sound output which will give you better sound quality.
Yes Samsung is a good quality brand.
Sony is a great brand of DVD player that will play DVD-R's. This brand of player will not only play DVD-R's but it will play them in great quality, unlike other DVD-R players.
Plextor drives are well known and are very durable, lasting well beyond their warranty.
Toshiba DVD players are known to have a very good build quality and also come with a long warranty.
Disks that can be played on DVD ROM drives are the kinds of disks with movies on them. DVD ROM drives such as music can't be played because DVD ROM drives are specifically for playing movies.
LG drives are very cheap, but still offer good buffer underrun protection and other must-have features.
Sony makes the best quailite DVD's by far.
One can buy dvd cd drives online through sites such as Amazon and eBay. Stores like Staples and Best Buy also sell dvd cd drives. Target and Sears, some locations, also sell dvd cd drives.
Panasonic makes top notch reliable cartridge drives, consider the Panasonic DVD-RAM Cartridge Drive. It has received critical acclaim and excellent user reviews.
As of now the best selling DVD player is the PlayStation 4 gaming console. In the past the PS2 was the highest selling DVD player.