I once spent about 6 months on the CHRISTADELPHIAN Discussion Board and found them to be practically identical to JW's except for the fact they are smarter and more intellecutally honest. Their penchant for accurate scholarship was a pleasure, too.
I agree Terry, I've actually sat down and talked to one. Hellrider, they don't accept the Trinity doctrine, btw.
They are much more intellectually honest, IMO, as you mention, and aren't hung up on all that "theocratic organization" bs.
I really think they could make some inroads with JWs but they don't seem to directly pursue that goal from what I can tell.
Furthermore, their statement of faith that most of them adhere to today goes all the way back to 1898. This was an amended version, which is pretty close to the original which dated back to the mid 1800s.
Here is a provided clarification of the above with doctrines to be rejected: http://www.christadelphia.org/reject.htm
The most notable difference with JWs is the rejection of the Devil as a personal being. They use the same reasoning for that as they use for rejection of "immortal soul"/existence after death...that it was a pagan concept introduced by surrounding nations and all language that suggests it in the Bible is simply figurative.
Fact of the matter is, in 1918-1919 their beliefs were much closer to today's WTS teachings than the WTS's teachings were at the time.