Oh fuck, you just had to pick those two, didn't you?
I love the Lamborghini because it was designed and built by the employees in their spare time and it was both beautiful and revolutionary. It looks like utter pornography and sounds like god mid-coitus.
The Daytona, when it was released, was the fastest thing on the road. It's simpler, more refined and elegant. It's Audrey Hepburn in car-form.
EDIT: Wow, looks like I'm in the serious minority. I went for the Daytona. I love both cars, and if I were in a different mood I might have gone for the Lamborghini (it has always been a favorite of mine). Here's why I went for the Ferrari: First of all, I think it's more refined. The Lamborghini is a bit mad, like all Lambos. I can see myself cruising around La Jolla in the Daytona, but I can't really see that in the Lambo. Also, the Miura had a bad tendency to get light in the front the faster you went, I think they finally sorted that out by adding an air-dam to the later years run, but it spoiled the look.
Maybe when I'm in a more gonzo mood I'll look at this and kick myself in the ass, but if you had them here right now I would pick the Daytona.