I bought a Sony RDR HX-900 a few weeks ago. It certainly lives up to its expectations regarding picture quality. The user manual warns that when you are using the A-B erase method on a DVD+RW, the erased section may be slightly different from the points you selected. After spending a really soul destroying afternoon testing out the exact difference between the intended edit points and the actual results, I found that edit point "A" can be up to 11 frames later the selected point, and edit point "B" can be up to 10 frames earlier. Therefore, the portion removed is always slightly shorter that intended. When I edit the hard drive using the A-B erase method, (to remove commercials) then dub to a DVD+RW, some of the previously erased frames reappear on the DVD+RW! The secret is to cut out those extra frames each side of the portion you wish to edit before you dub. Now the 64 dollar question. Why do frames that were allegedly erased reappear after dubbing?