I was looking through the new spring Bass Pro Shops catalog that came the other day in the mail. It has the latest fishfinders from Lowrance in it, including the X-91. Has anyone fished the X-91? The catalog says it comes standard with temp. but what about speed? Is the unit even capable of having a speed transducer hooked up to it? What would be the differences between the X-91 and the X-85? Do anyone know of any stores in northern California that have the units? Thanks for any help.