I'm not aware of any TBCs found in consumer VCRs. The higher-end decks from JVC, Panasonic and Mitsubishi may not be rack-mounted gear, but they are definitely professional and/or broadcast field equipment. The TBCs provide some functions, but not others. I wrote about this in a forum post here recently, and the more expanded information is at
http://www.digitalfaq.com/forum/show...8710-1853.html (3rd post down). It can reduce dropped frames, but it won't remove/prevent them like a full external unit will. The 8710, for example, is $200 range, and uses standard composite/s-video connections. More on that TBC in the above linked thread (in fact, that thread initially started out as an AVT-8710 topic).
Good audio info.