My experience with Riteks is somewhat limited but every Ritek disc I have used in the past has been identified in the ATIP as "Ritek".
4X CD-Rs? Are those overprint discs? Why the slow speed?
I noticed you are in the US. If you want consistent quality without compromise, buy the Fuji Film CD-Rs. They are of the highest quality and manufactured by the CD-R patent-holder Taiyo Yuden. You can pick these discs up at Best Buy and CompUSA at reasonable prices, sometimes very cheap with rebates.