Surety Company of the Pacific is good, but not sure if client is too big. Also easy to get appointed.
http://www.suretycopac.com/

Insco Dico is another option.
http://inscodico.com/suretybonds1.html

CNA does bonds, as well as Hartford & Financial Pacific... Check them all out.

Try First Comp - If you don't have access, it's easy to get it and there's no commitment.

http://www.firstcomp.com