San Francisco Chinese Delivery

I am looking for a good Chinese delivery place in San Francisco. For obvious reason, you would think you could find a great Chinese place that delivers...as a matter of fact, there should be a whole bunch. So, why can't I find one? Maybe all of the really good chinese restaurants like Eric's on Church St. don't deliver for a reason? I am really starting to get a bit perplexed about the whole thing. Plus, I am afraid to try and new ones as the last few have been really bad...and used MSG. That stuff is like crack, I don't know who invented it, but it makes me feel like I just took 4 Sudafed. So, if you know of a great Chinese restaurant that delivers, please post a comment here and let us know.