We are looking into buying a drilling machine, to drill holes of 2mm - 3mm. for freshwater pearls 5mm-11mm, Hundreds of pearls..

I found 2 types of pearl drilling machines:

1. http://www.ottofrei.com/store/produc...at=2507&page=1
2. http://www.cnepearls.com/dmc002-simple-style-pearl-

Which is better?

thank you very much.