This sort of conversion kit, always marketed with that "save your tapes before it's too late" angle, is a bit obsolete. DVD recorders are pretty cheap and hooking that up to your video is a much quicker and simpler way of transferring your tapes to disc. It's more useful if you want to simply digitize your VHS material for archiving on your PC or other storage device. They should market it more from that angle.
The quality is average, but then most VHS sources are pretty bad by current standards.