Any experience with cloud service professional astrology software?

Has anyone here used a cloud service version of astrology software for professional astrology? Not just something like Astrodienst--that's fine for casting your own chart and occasional charts of people you know, but clunky for professional astrology work. I'm thinking along the lines of Solar Fire, but in the cloud instead of on the desktop. Something where you can get quick access to the birth charts and years of solar returns and progressions and all that, more or less at once.

Recommendations, pros, and cons sought!