I went by the dealership today and ended up getting a Mirage (ES) loaned to me for the weekend. So far I'm loving the thing. It's down to a Mirage or a Spark, but after all day with the Mirage the Spark is going to need to be super impressive. The 3-banger vibration at red lights is noticeable, but not a concern as that's the nature of the triple beast. The super slow acceleration is going to take some getting used to, but I ran it up to highway speeds and it didn't break a sweat. The ride is much much better than one would think possible in such a cheap and light car.
Overall I still like the look of the Spark more, and I'm used to integrated XM, but I'm thinking it's going to take a stellar showing from the Spark to keep me out of a Mirage.
Also, assuming I end up with a mirage, I thought Silver would be my choice, but the red of this demo has grown on me, as has the thunder gray....also like the blue....so many decisions!