i want to buy a dvd writer and i cant chose between the writers

[soma]

hello everyone,

i wan to buy a dvd writer the mean point i dont know what is the defferance between the dvd-r & dvd-rw , and the dvd+r & dvd+rw ,and i dont know which braned should i get the pioneer A04 or the hp220i or do u have a better brand than those.
Or shall i wait for a new generation that r comeing soon.
i wont to use it to recored dvd movies and games for ps2.

so can u please help me ,thanks and waiting for yr feed back