I find the express window in the Sonic annoying. I frequently want the window down just an inch and a half, to the lower edge of my fancy rain protectors, and while that is easy with the other three windows, it is a pain with the express, which doesn't seem to click in and out of function with any consistency.
I drove a rental Focus a couple months ago, and all four windows were Express, but the express worked much more coherently; touch the window button and it starts moving in the direction you specified (up or down) touch it a second time and it stops regardless of whether that second touch was up or down.
I would love to either install the Focus system, (preferably on all four, but at any rate on the driver's window,) or to get the driver's window to just act like the other four, and to heck with the Express function, I don't like it as much as I hate it.