Scott... no problem getting a signal under your bimini.
The 2007 stuff does look great but will knock you back some major bucks. I guess I would say that a lot depends on your cruising plans. If you are gonna be taking off for new poerts and new horizons...then the new fancy stuff can be helpful and the potential integration with future stuff is worth thinking about since my guess is you plan to hold on to your new beauty for some time. Otherwise...I'd just go for the discontinued stuff as it is still pretty damned impressive and does everything you need to safely navigate.