I have had mine since they first come out when they were still 600 bucks,the lake master chip was another 100.
personally I think its a great unit and it has served me well all these years but if I had it to do all over again today,I would look around a little for something newer with more features.
the flasher side of it works great for ice fishing if you buy the portable kit for it,but again,there are faster units on the market today.
Lowrance has never let me down when it comes to customer service,ie,one time in northern Mn I was on a lake and had the advanced menu so screwed up it wasnt funny.
one call to them and they walked me through how to undue what I had done while I was on the water,bet that tech guy is still laughing today as I had a fish on shortly after he answered!!
you cant go wrong with it if it looks like what you want and you can update it through your laptop/computer when needed.