Anybody running one of these that can tell me how they like it? Bass Pro is running this unit on sale for $599. The ad says it is a touchscreen unit, but when I went to look at it today, they say it was a misprint and the unit on sale is a salt water version with no touchscreen. Nonetheless....I would love to hear from someone that has a similar unit. I am new to side and down imaging and have no experience with mapping. All I do is crappie fish....no bass. The unit also comes with a free "LakeVu" mapping card. Will this cover Chickamauga and Nickajack? I will mainly use this to sidescan docks and find brushpiles. Looks like a pretty good deal if it does all they say it will do. Any advice/input is much appreciated. Thanks.