What is a good family health insurance plan?

I am looking for affordable health Insurance for my family. 2 adults and 3 children. My husbands job moves alot so we need something that has national coverage and we are not interested in the health care discount plans. we are looking for a heath Insurance plan with low dr visit copay’s and a prescription drug plan. If any one knows of one pls leave me the information. Right now we are in Texas and we have a home address in Tennessee. Thanks