Micro-motor

Hallo there Does anyone working with Micro-motor would like to
advise me. I’m about to buy a Micro-motor set [ including a
setter-hammer] from a swiss company; ‘Bijoutil’ . The thing is that I
live in India. and will buy by remote order, and only through a
cataloge. My main Q. is about which Handpiece to chose??? they have
the One size collect for the 2.34mm standard, quick changeing [like
what iv’e been using with my old flex-shaft. or the inter-changeable
collects hand-piece wich i was thinking could be used with the small
[and short] dental-burs 1.60mm…? [i like the quick changing type] any advices. thanks akash lotan