>PLEASE. No sectarian fighting. Just provide your arguments and leave it at a casual level of bant if you need to.
where do you think we are
First, check out the council of Florence. While it went off the deep end due to the Orthodox deleagtes being tired of not progressing, being themselves divided on the issue of the filioque with 3 parties (Mark of Ephesus's that said the filioque absolutely is a heresy, Gennadius Scholarius's that said the filioque makes sense but the Son cannot be called "cause," and Bessarion's that said the filioque as expressed by the Catholics is perfectly fine), and the Ecumenical Patriarch Joseph's passing away (and most importantly, the Orthodox delegates not actually holding synods back home to confirm the union, except one in Constantinople years later that lasted for like 4 months), it still highlighted pretty well the actual issues that separate us:
- the meaning of the filioque
- the legitimacy of the addition
- the use of unleavened bread for the Eucharist
- Purgatory
- how the Pope's primacy is to be exercised
- and, as a more minor thing, the consecratory formula (do the Holy Gifts become the Body and Blood of Christ when the priest says "this is my body, this is my blood," or is it when the priest prays for the Holy Spirit to come down upon the gifts?)
For a good history on the filioque: check out Edward Siecienski's "The Filioque: History of a Doctrinal Controversy."
For a good history on the Papacy: check out Edward Siecienski's "The Papacy and the Orthodox: Sources and History of a Debate."
We've done various degrees of progress on each of these…
After you've read these books (which detail the history of the doctrines not only before but also after the schism, so they paint a good picture of the current Orthodox and Catholic stances on them today also), it's time to make up your mind on who expresses today the historical doctrines the best.
But this isn't sufficient - check also the documents of the Orthodox-Catholic Joint International Commission, which detail what we can definitely say we agree on today, and so show the current progress (or lack thereof).
http://www.vatican.va/roman_curia/pontifical_councils/chrstuni/sub-index/index_orthodox-ch.htm
Notably, the documents of Ravenna and Chieti concern papal primacy.
For something of lower authority, but still interesting to check out: look at the North American Orthodox-Catholic Theological Consultation.
http://www.assemblyofbishops.org/ministries/dialogue/orthodox-catholic/
They have a good document on the filioque in there too.
The reason we don't talk yet about unleavened bread or Purgatory is because history has shown that the primary theological dispute is on the filioque, and, with Vatican I, that the Papacy is in fact an even bigger issue than previously thought.