A couple more notes:

1. I was very impressed with the feel of the buttons. They look kind of cheap, like the rest of the unit, but have a firm reassuring feel and a proper click when you press them. These days good buttons are a rare find, so I was quite happy.

2. I learned something new about the unit (I guess I already knew this but I just hadn't processed it yet). If you look at the "trip", "today", or "tank" screens, you see an averaged mpg reading, just as you would expect. If you look at the "gauge" screen, you see the instantaneous MPG reading. This means that if you're going 50 miles per hour and take your foot completely off the gas, the MPG will shoot up to 70 (or some other huge number). When you start to seriously accelerate, it will drop to under 10. That's a lot of fluctuation; but after you think about it, it makes perfect of sense. I don't know if I'll use this feature much, but I guess it's nice to have it.

EDIT: It makes you think twice before "putting the pedal to the metal." frown