For those who are thinking of getting a N/S 6000i which can only read up the Gold level Navionics, you might possibly be interested in Northstar's confirmation they expect to release a 6100i model "in March" which can take advantage of the premium Platinum charting, presumably at a bit more of a premium price.
http://www.northstarcmc.com/www/ns-t...100i-pages.pdf