MBI can give you some damn good initial burns on the BenQ 1620 and NEC 3500. BUT some have stated that after one month, the quality of the disc DRASTICALLY plunges. So i'd be wary of these.
RICOHJPN---well some swear by and love RICOHJPN02. I haven't had much experience with these discs. So i don't know how good they can be.
Prodisc--- Never had any success with these discs on my BenQ.