Put it this way: I have used the ADVC110 to digitize and re-edit about 25 VHS home video tapes that were 20+ years old, and have been pleased with the results - for how else are you going to preserve them?
As for quality I would largely agree with them. Digitizing will not (cannot) improve the quality of the source material, but nor will it degrade it. You can help yourself along the way by first cleaning the tape heads of the VHS player and fast-forward then fast rewind the tapes (so they don't 'stick'), and at the other end of the process by only using top quality media like Verbatim DVD-R or Taiyo Yuden, and a low burn speed of 2x or 4x. For the actual burn process I always use Roxio Toast.
The more expensive ADVC330 (I think that is the model number) has more options of one kind ot another, none of which will improve the final result. There are other analogue to digital converters out there, but many users here prefer the ADVCs.
don't pay an arm and a leg no technology in the world can amke vhs into real quality image quality
looking at old vhs movies I even have problems recognising the actors
as long as the tvtuner/capture device can keep the audio and visuals in sync the vhs will always be thelowest common denominator