Panasonic  DMR-ES40VS VHS / DVD Recorder Silver
Panasonic has a new firmware update to correct issues with product
Before you trash your unit because of recording problems, contact the Panasonic web site's consumer support.  They will send you a firmware disc designed to correct these problems.  I've bought their products before and never had trouble.  My disc is on the way, and I believe this will be the answer to my recording trouble.