Thanks everyone for the help. I realized that the reason I was having such a hard time finding anything out about the AD was that I kept searching "astro" instead of "austro". Doh! Anyway, after reading up on the AD's and hearing about potential problems w/ the Peugeot (cottered cranks, french threads), I think I'm going to plan on going with the Austro-Daimler. Also, both of the bikes were given to me, but the AD was my Dads, which gives it a little sentimental value.
One more question (for now): Does this bike probably have a free hub w/ a cassete that slides on, or will it be a free wheel assembly that comes off completely? And depending on what it is, can I just take off the rings I don't want and use some sort of spacers to but on the ring I do want to use? If you didn't notice, I'm new to SS's and haven't ever taken apart a rear wheel to know what to expect.
-Will