Hi, I have 2 DMR E85's, and as i live abroad i buy DVD's in bulk, & I find they vary batch to batch with the same Brands. The first Batch of Bigpockets own brand were brilliant, the second batch has been useless they hang up the machines which then have to be forced into StandBy, and then Manual Eject, or they will not complete Self Check. Another Problem is Discs do not finalise on first attempt. At the moment I find the best Discs I have are DataWrite 4X -R every one OK so far, but i believe they are going to be replaced soon so I bought in bulk, If you want RAM i use Ritek and found 100% OK.
I found my requests to Panasonic were not helped by their replies. And before I found that wrong discs cause big problems I had to return one of my machines back to them to sort out. A duff disc can hang up your machine, so If you get a failed record, Force StandBy (Hold Press on On/Off) And then Eject Disc Press Stop & Channel Up at same time keep pressed untill machine comes to life & Ejects the disc.
When I can get Discs that work, and the machines are working OK i like them. But I am not certain i would buy again, too tempremental.