How is San Diego for tech jobs and startups? I generally like to work at startups and would look at rails type jobs (if my startup does not work out for some re

How is San Diego for tech jobs and startups? I generally like to work at startups and would look at rails type jobs (if my startup does not work out for some reason). If it does work out, I'd be interested in whether there is a decent population of high tech folks in San Diego as a talent-pool. Edit: I'm in Boston, now, for comparison.