Hey fellas

New to the precision world and I am wanting to move up to a guidance system.

I like the ez guide units but I dont quite understand the differences between the 250 and 500 units. Both seem alot alike to me. I am not looking to do big licks in the precision and mapping world, but we do have 3 lime trucks (boom type dry lime spreaders) and I would like to install one in the truck I drive. I like the 500 but the price is a little more than I would like to pay. Will the 250 do what I need to do? Mainly guidance and acreage monitoring is what I need. I dont think I need the Cadillac....

Also, what I would really like to know.... If you start into a field, and spread the whole perimeter of the field you want to work in.... is there a function on the monitor that can tell you how many acres total are in that particular field?

Please Help! I am still using 20 year old Ag-Chem Terra Tronics monitors!

Thanks
Tyler Hall