Weblog Client that preserves WP indentation and HTML features?

I’ve looked at several Weblog clients, but none appear to support all the formatting options of the WordPress editor.

I’d love to find a client that supports the multi-level paragraph indentation feature for example. I welcome suggestions for clients to look at running on MacOS X, Windows, Unix, or Browsers.

A related question is whether there’s a way to make the number of lines of text that show up in the WP post editor much taller?

Thanks!