RFDS QLD has 4 of these in use. I'm pretty sure I've seen 2 others (saw them in Brisy with no paint other than white!), but don't appear to be flying with them yet.
The Collins Proline 21 Avionics Suite is a very very nice piece of kit.
Standard on your Beechcraft King Air 200's and 350's these days. I've done a couple of flights in one with the Proline 21, and the things it can do is amazing,
. Top marks to Rockwell Collins!
morno