kgdlg
I work on Cap Hill just north of SU and I have not found that many great options for riding the bus. Here are my usual routes (I live in Gatewood, WS):
#21x to #2 that heads up Seneca/Union
#21x to #12 that heads up Madison
#21x to #3 that heads up Jefferson
Each of these can take up to an hour depending on time you leave, walk between buses and transfer to second bus time. Basically, it sucks.
When the First Hill Streetcar is done next year or early 2015 there will be this additional option, but it isn’t great for W Seattle, because it connects to King Street Light Rail Station, which is a walk or a bus ride from where the express WS buses drop downtown. So, you would take more time getting to the streetcar than the faster ride is worth. Better just trudging up the Hill on the 12 or 2/3. In the summer, sometimes the walk up to SU from downtown takes me just as long as the bus, hah!