Hi Gowell,
SSF & Daly City offer good affordability but also a bit more fog/cooler climate which may/may not be of importance to you.
You'd want to research the East Bay commute in to San Mateo, sections of those freeways can get pretty backed up although parts of Hayward will offer the shorter commute.
Your choices will be narrowed down by what community features you are looking for, climate, etc.
I recommend interviewing a few Realtors & choosing one to work with in the process. - Yesterday, 19:52