Shimano now has the reel stats on the site for the Spheros FB and Saragosa.
http://fish.shimano.com/catalog/fish/products/group_detail.jsp?FOLDER%3C%3Efolder_id=25343743020 59301&ASSORTMENT%3C%3East_id=1408474395181270&bmUID=1199629332313
http://fish.shimano.com/catalog/fish/products/group_detail.jsp?FOLDER%3C%3Efolder_id=25343743020 59305&ASSORTMENT%3C%3East_id=1408474395181270&bmUID=1199629332313

Appears the Saragosa is the higher end of the two.

Need help in determining the basic differences to that of the Sphero FA?
Any price info as well.

This should help.
http://www.striped-bass.com/Stripertalk/showthread.php?t=43595