Great for screws, as you said. Also terrific with a countersink. I also like it for small holes (I have a few square-shank twist bits, but also with a 1/4" auger if the wood isn't too hard - I also use it a lot with a hex end bit of the pilot-hole countersink combo variety on the rare occasion I'm doing something with a lot of screws.) as I find I do better at keeping holes square and plumb with a brace than with an eggbeater.
I totally agree Joshua.
I don't have many braces, just one in each size, but they get more use than the egg beaters.
From left to right in brace sizes: 5" Stanley, 10" Spofford, 8" and 10" Yankees, and 12" Miller Falls.
The MF is particularly interesting. Similar to a Spofford but with bling!
My enjoyment in using these tools lead to building a couple of braces, both with a 4" throw (for screws). One I gave to a friend, the other I kept:
Regards from Perth
Derek