Great few words about DSC. I know there is loads more that could be said, but 2 things i allways tell people about when they ask is:
1) Coastguard will not continue to exclusively monitor ch 16 from 2005 (best to check date)
2) Without the NMEA link to a GPS the position transmitted can be misleading since it transmitts the last known position, since this is entered on the keypad it is lilely to be some time (and therefore distance in a RIB) ago. This is of particular relevence to people who are considering a handheld DSC, where it is unlikely (although posiable) to link into a GPS.
Just suggestions, hope you won't mind a few more if i think of them.