I've got both a 7500SS and the 704z, both converted to manual pickup, and although I've only had it a short time, I prefer the 704z for surfcasting.
One thing that I didn't like about the 704z was that you couldn't close the bail w/out reeling like you could with the SS. Converting to manual pickup was a necessity.
Decathlon is closing the store near me and has all fishing inventory at 25% off. They had 704z for ~ $65. Don't know if the stores down south are offering the same.
http://www.decathlon-usa.com/us/magasin/store_index.asp