Just a comment. Many of my net friends who have 7300s are ordering 6400Ms. Very interesting. Flex must be doing something right.
Well since I am one of those friends that Wayne is talking about maybe I can shed some light on the question. First let me say that in MHO the Icom 7300 is the most bang for the buck in amateur radio. It does most everything very well, so why have I purchased a 6400M? There are some things that the 7300 doesn't allow one to do or doesn't do very well. First the Icom remote software in my opinion is junk. It is old technology that is not at all intuitive or flexible (no pun intended). Personally I sometimes like to operate a radio with a computer interface providing an adequate spectrum scope and waterfall with full access to all radio features; can't presently do that with the 7300. There are some 3rd party developers that allow a large spectrum scope and waterfall, but they are very slow and don't provide much control. I have owned a couple of Flex radios in the past and I enjoyed some of the features not available on the Icom. I believe that the Icom 7300 is a great way for those who have never used SDR to get their feet wet with a very good radio at a very attractive price. Many of these 7300 users will probably move up to the Flex Signature series to experience a full featured SDR radio also at a very attractive price.