Good question! First you will want to look at both of your benefit statements from Social Security to see what kind of benefits you would both get individually. Not knowing your ages or current financial need (or if this is a question to help plan ahead), it is hard to say whether he would benefit more from filing for his own benefit or as a spousal benefit under you if you will, in fact, have the higher benefit. That being said, Social Security is the best inflation-adjusted lifetime annuity out there, so the higher of the two benefit is what you want to hold off on receiving as long as financially possible because you received an 8% increase on each year of deferral (up to age 70), and this benefit will also what is paid out the longest of all (because this will also be the survivor benefit to your husband if he outlives you, or your benefit if you outlive him).
One option to consider is: Having your husband start receiving benefits under HIS earnings and then switching over to the spousal benefit (only if it's higher) once you file and start receiving benefits on your earnings.
Keep in mind: While the employees at the SSA can help you crunch the numbers, they are NOT able to advise you in which decision is best for you. My advise would be to find a financial advisor in your area is knowledgeable with Retirement Income Planning and Social Security. Good luck.