Ultimate Track Toy?

Ryan and I have been going crazy with Forza 3 at lunch, and it’s really been making us both want to get a track car and get out on the track. I just was deleting a bunch of old files from my laptop when I came across a bunch of pics I took at the first Grassroots Motorsports Ultimate Track Car Challenge at VIR two years ago. I don’t think any of these cars were in the event, but they were out on the track doing laps between heats. Take a look at the other three cars after the jump and let us know what your pick would be. You can probably guess mine.