Just talked to an account friend about this on Saturday.
Federally, Married filing jointly will give you the most benefit financially, but
in my state, we are a community property state. So, if you file and he files, as married filing separate, later if anything is wrong with his return you are not protected and may have to pay his unreported tax burden. Basically, it is bad both ways for you in a community property state.
HTH,
For_me