I finally found something good: Smartdraw.
I had used Smartdraw several years ago and liked it then. It's been updated to include a huge set of symbols. I bought the whole shebang for $200, because I wanted both the Electrical Engineering and Software symbol collections. After I got it, I discovered that the basic $70 package includes enough schematic symbols to do what I need. Oh well, now I have every symbol in the universe.
Once I get used to it, I think I will be able to produce schematics in about the same amount of time as by hand drawing. But of course they will be easy to edit and will look nicer. This software is a lot easier to use than Visio, and cheaper. It exports to every graphics format I've ever heard of. Thought you all might be interested. If you draw anything, check it out. There is a free evaluation to download.
-Richard