Almost always better to file as Married Filing Joint (MFJ).
It is good to compare however with the online version you have three separate returns to look at and compare which also means 3 separate user ID and passwords to do this.
The cd/desktop version make this very easy to look at.
See below for more details.
https://ttlc.intuit.com/replies/6047767
https://ttlc.intuit.com/replies/4775330
