Fantastic pics, I love the Gallardo and Avents, one of my best friends is a big Gallardo guy and started the club in Vancouver for the Lambo guys. I've not been in the Aventador yet, but have a fair bit of time in a few Gallos, great cars, probably my favorites.
One of the reasons we want the 4c is the light weight and "fun" factor that provides - piling on power always works, but chopping weight is an entirely different kind of experience, at least it is for me. Just be a change in another direction, plus I haven't had a 2 seater since the Viper. Like I said, the Slingshot was the most fun I've had in ages, and it really isn't all that fast, most any newer sport bike will beat it easily, not to mention higher performing cars, but that fun factor is hard to beat. I think having a passenger beside you that is laughing at the same things you are is a big part of the attraction, as dumb of an investment as they are, I could see me in one next year instead of the ecoboost Mustang as a 3rd/project car.
I don't think anyone will ever compete with cat shots for acceleration, not in a car anyway, maybe if they make a rail gun with a seat on it some day. Few people have access to that, or will ever experience it, which is a shame for us, and a good deal for you and others who have.