Hey Demco,
I upgraded this year to the HDS10 and it works really well, I love it,
took me probably a good month or two to get used to it and nail down the features and settings that work best for me
as with everything there will always be some bugs or hiccups but in the end it is usually user error or at least on my part it was.
choose where you buy and make sure there is good after sales support I bought through west marine in richmond had them match an online price and they also just sent me a hundred bucks back in store coupons
now I just have to get back down there to spend them