Not that I can help you, but usenet is often faster for a lot of people. Most intelligent posters add par or par2 files which keeps anyone from getting anything corrupt. Bittorrent always depends on at least 1 person seeding. If that person stops seeding, everything up to that point is useless.

In other words, they both have their strengths and weaknesses. If there are par or par2 files for what you're looking for, get them while you can and then just get a program to interpret them (I have one I use at home, but I can't remember the name of it right now). Once you have that, you should be able to rebuild the corrupt vob file.