I voted "Other" because I think a Stingray would be one of the best beginner drivers. The only problem I see with that is that the Stingray is considered a mid these days. D'oh! One of the signs of old age...
That said, for the folks I got involved in throwing recently, I've been handing them Leopards or Cheetahs or Archangels as drivers, because that's what we have in abundance in the bag of extras. I'm thinking about laying in several Stingrays, though, just to use them as the gateway drug...er, disc to get folks hooked easier.
My first driver was an XD, the first actual golf disc I ever owned; it was also my first mid and first putter, for the same reason. Was a wonderful replacement for the Whamo lid, of course, on all counts. There weren't many options to be had at the time. When the Stingray was introduced, it quickly became my favorite. Shoot, even after the Eclipse was introduced and began my primary driver, I kept Stingrays in the bag for regular use.
Damn, I think I'm gonna sing some Kum Bah Yah and order a Stingray....