One of the things that you will notice is that the unit is so much brighter, and that is to me the best part. It has an internal
antenna which is good but its cheaper in price as well. I personally started out with lowrance and switched to humminbird after just issue after issue with lowrance. Depending on the model you get you won't get the quick view buttons but I don't really worry about that. Another thing is that the screens aren't like the old model with the plastic going around them. These are more like your cell phone screen. Over all I can say i am pretty happy with the unit, and my only gripe if I had one is that on my model I have to get another lake chip ( don't remember what brand I already have). If you get any unit under the 9 than you can't link them together like my 898si are linked.
Just something for those looking to buy.