TDK-EHG tapes-is there a problem??

Several months ago, I remember there was some discussion as to whether or not
there was a bad batch of TDK-EHG tapes in circulation. I didn't follow the
discussion to its conclusion, but now I am seeing a problem which could either
be defective tapes or a defective head on my VCR. The symptom is that tapes
recorded on this machine have three random noise bars across the top half of the
picture. The problem can be fixed temporarily by cleaning the heads. I know that
having video heads which clog easily is a possible symptom of excessive head
wear, but this also could be caused by defective tapes. I bought a quantity of
TDK-EHG's last Summer, and these are what I have been using when this problem
occurs. I would appreciate hearing from anyone who has information on this.
Thanks!

John