I would guess that your 3520 will burn as well as my 3500. I get superb results with Ritek R03, G05, Ricoh W11, MCC -R, as well as TY G01. I would assume you will do equally as well with MCC an TY +R. Given that you can get TY that will burn at 8X now for $35 per 100 delivered, there should be no question. Go with the best.