Kodak Gold-ones, without doubt. Especially if you can find older ones (4 or 8x-rated, avoid Greenish 8x's!) consider yourself lucky! I've burned cdr's since late 1995, and those older Kodak's are just unbelievable. (Older Golden Traxdata's were made by Kodak too...) Readable in any cdrom from 2xPanasonic to 50xAsus, and all of those are still 100% readable in spite of numerous scratches. Worked wonderfully in at least 10-15 different cdaudio-equipments, too.
Newer Kodak "Gold+Silver" ones are very good too, thought I don't have such a long experience with 'em.