Hi, I'm looking for a 1-to-4 or higher tower DVD duplicator -- any recommendations on fast, reliable units that are good?

eg there's many out there, like these:

http://store.yahoo.com/meritline/8x-dvd-duplicator-sure-play-1-8.html
http://www.proactionmedia.com/cd_dvd_duplicators.asp
http://www.runtechmedia.net/store-cat.asp?categoryID=200111231217011&a=10

I want to produce commercial DVDs for direct mail sale... also, any ideas re shrink-wrap machines? To sell on amazon, they have to be shrink wrapped too..


thanks,

Ken