I was in the same boat as you,with this same choice. Great insurance and I had a good job with unbelievable of benefits.
Sadly, I lost my job because I had a work related injury that caused me to be out for over a year. My employer gave my job away. The decision was made for me :( Life does that some times....
Anyway....DH's employer actually had several plans to pick from. We opted to spend a little more for better coverage. I wonder if that's an option with your DH's employer.
If you do stay home, think of the money you'll save in child care, transportation, work clothes, etc. You can shop around for better insurance or maybe your DH's employer has other options available, like mine did.
Good luck.