Satoshi and
BTC.
Since the major part of the transaction happens with the fractions, I think it's more comfortable to talk about satoshi instead of trying to reading something with 8 decimal points using other units. If not, beeter to read the entire value.
But why someone would create a currency with 8 decimal points instead of using just atomic units is beyond me. Although I wouldn't to see this changing.
I believe that any measurement that uses the metric system is the easiest way to discuss values in general when discussing an amount of bitcoin with someone else. I believe that slang terms like "millie" or "satoshi" should just be left out when trying to have an honest conversation. Everyone tends to know the metric system universally since it's used for every type of scientific measurement, and I think that it should be kept that way since bitcoin is trying to become the first global currency.
Plus I mean think about it... while everyone on here knows what a "satoshi" is, is there any real reason to be measuring your bitcoin value in satoshis? There is literally no value in a satoshi, and it's misleading to say you have 1K satoshi's on hand when that still is in a sense, nothing.
I don't get the point, however. There was one day where even 1 BTC was just fraction of cent of one US dollar. Saying you had 1000 BTC didn't mean anything relevant.