Filing taxes jointly or separately for married couples

Hi! 
Last year I filed my tax married filing separately but I wanted to discuss with you if this is the best way to file. My husband has no student loans but I do. We have no kids presently but we have one on the way. We bought a house and two cars this year. I do get paid more than my partner and I intend to apply for pslf. Currently, the student loan pause has resumed and I’m wondering what will be best way to file - separately or jointly. Thanks.