I prefer Verbatim too, but I did buy a 25-pack of these a couple months ago for $100 at CompUSA. I've burned about 20 of them and have had no problems with them at all.
One of my players (a Philips 642) occasionally rejects Ritek DL media. I don't think it's ever rejected a Memorex, but I'm not sure. These Memorex, and other Ritek DL disks, play perfectly in my other 2 DVD players, my portable DVD player, and of course, the computer.
I still prefer the Verbatim DL media. In addition to having no compatibility issues (for me), Verbatims burn at 4x (as opposed to 2.4x) in my Pioneer 108. But if the price is good, I wouldn't hesitate to buy these. Good luck.