Don't know about the Calypso, if that is the one you are talking about (they make a Callisto, so it
gets confusing)
I've noticed that people tend to upgrade in waves, so not to worry.
Both of those preamps are quite good.
If there are a bunch of Calypso's up for sale, they could be trading up to Callistos,
I know Jim White at Aesthetix told me at CES that the demand for the Callisto
(their flagship preamp) has been off the chart lately...
Don't know what to say about the 2200, that's a very good full function preamp
from Mac.