I run a 1198 and if I am finding smaller pieces of structure and want to enlarge it I just decrease the width of my side imaging or use one side only. If you cannot swing the extra for the 898HD the 798si will do a very good job. I ran a 797c2si for 6 years until I saved my nickels and dimes for my 1198. If going the 898 I would strongly recommend the HD models the veiwabilty in bright sunlight is no comparison.