There are some Ritek G05 code, that are cheap and better, not best, can be found at allmediaoutlet.com & meritline.com
As mentioned by a post above, it's very hard to isolate the Made in Japan media. Almost all media now duplicated/manufactures in Taiwan that look exactly like the Japan made. But my choice also TY, YUDEN, TDK, FUJIFILM, RICHOJPN, MCC, SONY. Stay away from CMC code, one of the worst.
As far as + or -, doesn't really that matter nowadays. But + is suitable for Data, + or - is for video.
Quoted from
DigitalFAQ.com
"Media ID Quality Guide
The following list is in preference order. The best discs are near the top of the list. The discs at the bottom of the list are suitable only for a landfill. PVC is the best of all, LONGTEN is the worst of all, etc. Note: Some codes may be listed twice, done because a -R, -RW, +RW and +R by the same company may not be the same quality. The format is listed because of this.
1ST CLASS MEDIA
Almost flawless burns with 95-100% reliable results:
PVC = Pioneer (Japan) = (-R)(-RW) ... media is no longer made
MXLRG0x = Maxell (Japan) = (-R)(-RW)
YUDENT, TYG0x = Taiyo Yuden (Japan) = (-R)(+R)
MCC, MKM = Mitsubishi Chemicals (Singapore/Taiwan) = (-R)(-RW)(+R)(+RW)
TDK, TTG0x, TTH0x = TDK Corp (Taiwan/Japan) = (-R)(-RW)
SONY0xD = Sony (Japan/Taiwan) = (-R)(-RW)
2ND CLASS MEDIA
Decent discs, though not perfect, about 80-95% success rate:
RICOHJPN = Ritek or Ricoh (Taiwan) = (+R)(+RW)
PRODISC = Prodisc Media (Taiwan) = (-R)(+R)
RITEK = Ritek (Taiwan) = (+R)(-R)(-RW)(+RW)
FUJIFILM = Fuji = (-R)(+R)
OPTODISC = Optodisc = (-R)
INFODISC = Infodisc Media = (+RW)
3RD CLASS MEDIA
Quality can be very questionable, about 50-80% success rate:
LEADDATA, LD01, LD, LEDA = Lead Data = (-R)(-RW)
BEALL = Samsung BeAll (Taiwan) = (-R)(+R)
MBI = Moser Beaur (India) = (-R)(+R)(+RW)
MAM-A, MAM-E (USA, Europe) = Mitsui = (-R)
PRINCO, fake TDK = Princo (Taiwan) = (-R)(-RW)
ONIDTECH = Ul Tran Technology (Taiwan) = (-R)
MUST = Unknown OEM = (-R)
GSC001, GSC002 = Gigastorage (Taiwan) = (-R)(+R)
CMC, CMCMAG = CMC Magnetics (Taiwan) = (+R)
PHILIPS = Philips (Taiwan) = (+RW)
4TH CLASS MEDIA
Pathetic garbage media, landfill material, about 0-50% success rate:
CMC, CMCMAG = CMC Magnetics (Taiwan) = (-R)
PIODATA, PIO = LeadData/ Ritek (Taiwan) = (-R))(+R)
OPTODISC = Optodisc (Taiwan) = (+R)(+RW)
LONGTEN = Jilin Qingda ??? (China) = (-R)
YIJHAN = Yi Jhan Technology (Taiwan) = (-R)
ALL FAKE MEDIA = mostly InfoSmart (HK), E-Net (UK) and Mitsui (USA,Europe)
AN31, AN32, ANWELL, AN30 = "default" stamper code (usually Infosmart) = (-R)
AML = Advance Media Limited (Taiwan) = (-R)
INFOSMART, ISO001 = Infosmart (China) = (-R)(+R)
DAXON = BenQ/Acer (+R)(-R)
VANGUARD, VDSPMS = Unknown OEM = (-R)
UME001 = UmeDisc (Hong Kong) = (-R)
WFKA = Wealthfair Investment (China) = (-R)(+R)
ANYTHING ELSE = Unknown OEM or NEW"