I had this "new broad band radar technology" discussion with some reps at the winter boat show. Gist of it was that under some conditions and at certain ranges
the digital is better... and that in other conditions/ranges it was not.
My take-away was that this technology is still at version 1.0 or so, and a few years will make a measurable difference in usefulness and quality.
Our local independent dealer for most major lines is luke warm on it, but will accept anyone's money if they insist on handing it over (after getting an informed opinion...).
Like the old joke about being a software beta tester, if spending your own money, "betta wait!"
And, yup, I once got some "free" hardware from a reputable computer company for my trouble, but had to document a lot
of lock-ups to earn it!
So, if you want to stay on the bleeding edge, Go For It... and let us know how it works out.
ps: all you sailors with the newer Garmins, better read the warning buried deep in their install manual about magnetic interference with any compass within 39". IMHO, these products have no place on any boat, no matter what their colorful ad pages might (mis)lead you to believe.