I would say in my experience that the biggest difference is the issue of the Pope. There are other differences, but this is the only one that I can say generally goes across the Anglican spectrum, from high churches to low churches. The other issues, such as the Sacraments, I would not say are universally agreed upon by Anglicans. I will say that I’ve never heard of any Anglicans referring to the change that takes place in the Eucharist as consubstantiation (I don’t know if that was mentioned on this thread or not, but it has been brought up in the past), and the only time I ever heard that was through this forum. I have yet to talk to an actual Anglican or Episcopalian who holds to that belief.
Why I left- I really did not care for the direction in which the Episcopal Church was going, and I decided that I could not really get around the 39 Articles. I know they’re not binding, and you can, in theory, get around that if you really work at it, but it didn’t feel right that I would have to try to look for a loophole to stay in the Episcopal Church. So, I went the Continuing Anglican route and found a TAC parish, which I have been a member of for a few years.
Because it’s been brought up in this thread, I’ll just say that I never really considered the issue of female priests. For several years my parish had a woman priest and she was MUCH more high church than the male priest who took her place. She was actually the person who instilled more Catholic beliefs in me. That being said, it does not bother me that the Catholic Church does not allow female priests. The TAC does not allow it either.
The reason I’m leaving the TAC is because since I am not against a possible reunion between the two Churches, I obviously cannot have any major reasons for not being a Roman Catholic. After some thinking, I realized I didn’t have anything against the Catholic Church, and actually agreed with the Pope’s position. Once I realized this, I did not feel that it was morally right for me to stay in the TAC and wait for a reunion to occur (if it will at all). I understand that there are many reasons others in my position do not do what I did, but for me I did not feel I could remain in the TAC.
That being said, one of the reasons I had a hard time leaving was because I do not necessarily have a problem with not defining certain things (like how exactly the Eucharist becomes the Body and Blood of Christ, for example). Of course, I did learn that I did not disagree with Transubstantiation. There are other reasons why I had a very difficult time with that decision, but I do not have the time to post everything now.
I hope this helps.