Hey,
You guys ought to look at the Sevenstrand Wire brand from Berkley.
We ran their wire last year out on Lake Michigan for the Kings, etc. and was certainly was impressed with its performance for a wire diver set up.
Here is a link
http://www.berkley-fishing.com/dyn_search.php
Sevenstrand® Uncoated Wire 30 lb. 1,000 ft. Spool