E-proformance (tdk)

I just purchased 10 e-proformance dvd-r discs, nero cdspeed says they are ‘tdk go2’ . I have made several attempts to burn dvd movie back-ups,all failed on write error…these discs are crap.Can anybody please,please point me in the direction of reliable affordable dvd-r media.I have a Toshiba sdr5002 drive.The expense and frustration of all this is becoming totally unviable.:a