+R or -R Verbatim DVDs (16x) for 3520A?

I have an NEC 3520 writer (Firmware is original 2.06 with RPC1 & bitsetting) and was wondering whether I should buy Verbatim +R (MCC 004) or -R (MCC 03RG20) dvds. They are both same price here in UK. Bitsetting will be used for +R disk.

They’re both good, but I have always gotten better results with dvd+r (MCC 003 and 004) overall.