Thanks for the reply John.
If I'm not mistaken Lowrance is or has just recently come out with a side scan unit. I kinda like the smaller Humminbird style of unit being it will fit on the dash a little neater.
As far as the Side Scan, although it's more money, I think it will be a really worthwhile feature to have.
I think you're right about demoing the unit, I'll definitely go that route before making the purchase.