I am using Verbatim MKM001 (hub) photo printable DL discs, 2,4x speed burned @4x with a LG 5163D. Made in Singapore, marketed by Verbatim Europe in 25 pcs spindles and bought for 69 euros (cdrwinkel.com).
The results are excellent. Scanned with a BenQ 1620, the quality score in CD - DVD Speed is consistently 95 or higher. Too bad about the hub, but at least they are printable.