I have used only one type of DVD+RW, the 4X rated Ricoh JP-W11’s.
They actually produced the best KProbe scans by far in my 411@811 at 4X and with my 812@832 they continue to do very well (PI & PIF averages below 1.0, no spikes etc.).
From my experience and others on in the forum it seems like the Ricoh W11’s are the best choice for Lite On drives when it comes to DVD+RW discs. They are also the RW discs that Lite On chose to ship with the 411s.
The only problem is that I do not know who still sells them? The ones that I had were all Memorex and I purchased them at least 6 months ago (luckily they were on sale for $9.99 @ Office Max for a 10 pack which was an awesome price back then so I bought a few boxes which means that I’m covered if they are not readily available in the future. I use them regularly to back up my data and have restored images from them many times (which “proves” that they are indeed error free, that really puts them “to the test” when an image is restored onto a new hard drive using only a DVD+RW disc that contains the image).
Strange, sounds like you must have somehow gotten stuck with a “bad batch” of Ricoh’s.
I have never purcahsed TDK discs of any sort (all overpriced when I hae come across them, I go for the known “cheaper” branded Ricoh’s all of foirmats and have had extremely good luck with them in my 411@811 and now the 812@832).