CD/DVD Duplicators

[Bobbsy]

My son, who is the Theatre Technician at a local High School with a specialist theatre technical course, has been asked by his school to research and purchase a 7-way CD/DVD duplicator. This is something neither he nor I have had to research before so we'd appreciate some advice.

Three models that he's found so far are:

http://shop.cd-writer.com/acatalog/ALL_PRODUCTS_PRO_BURNER_DVD_CD_Duplicator_7_Drive_1076.html

http://shop.cd-writer.com/acatalog/ALL_PRODUCTS_CD_Duplicator_7_Drive_87.html#a2855

http://www.stordigital.com/info.php?id=6969

Does anyone have any experience good or bad with any of these or, failing that, any makes/models that he should be considering instead?

Thanks in advance for your help.

Bob