The Humminbird 899 is in the top side of your range if you are patient. Very easy to use and hopefully I will get the hang of it. Did have a blank card to take screenshots with but did just take a pic with my phone. I know some say you don't need SI and I suppose they are rite my way of looking at it is the SI units are more advanced and when spending my money I like to get as much bang for my buck as I can. The creek bed in this pic is in the upper end of a lake and with the help of SI I no longer have to be rite on top of something to mark it, just move the cursor over and mark it. Get as much screen as you can for your money.