i used the model below yours with the smaller hard drive,i've bought ritek dvds almost non stop for about 7 years G03/G04/G05 ,riteks work well in the pioneer,anything good quality will work: pioneer/sony/traxdata/tdk/sony and verbatim.
Any 10p discs you may have problems with.
I use sony dvd-rw .
Before that i used two infiniti dvd -rw ,which worked for about 40 to 50 uses before needing replaced,they are supposed to work around 1000 times.