Interest rates are, unfortunately, universally low right now, so
it might not be worth your effort to shop aggressively for a bank
with a 'better' rate.
I don't know if it's the case out on the west coast, but credit
unions have traditionally offered slightly more favourable rates
and more personalized customer service than the big banks. However,
if you're linking your money market account to your checking
account to be able to deposit and withdraw money from it, then you
might want to consider that the major banks will have a better
network of ATMs for your convenience.
Based on the second criteria, I would recommend Wells Fargo. They
are a major player out on the west coast (based in San Francisco),
plus their financial arm (WF Financial Services) does offer a broad
range of investments from which to choose. Accounts between their
banking and financial operations can be linked.
