NEC2500 +r or -r?

I recently installed a NEC 2500 burner. Works fine so far. 7 backups- no coasters using Maxell -rs. I need to get some more discs but heard a couple horror stories here that -rs dont last very long. Does anyone know if thats the case? Whats the diffence between -r and + r??? Thanks Bob

Its only princo media that has this problem
(princo only make minus media)

I use minus with ritek g04 dye all the time
never any problems.

Stick with the Maxell and you will be happy, - or + is great stuff. + will be Ricoh most likely, in the USA.