Kallistos Ware is very good, as ZP pointed out. I have yet to read his entire book, as I have only seen citations, but from my experience (and apparently experience of many others) he is very educated man.
Also, my two cents are that you should also read Catholic side… not saying you did or did not, but I used to be on verge of converting to Orthodoxy and disregarding Papacy. I did study a bit more and I got convinced, but that might not be your experience. It is simply my advice to look into both sides of argument before picking one.
And then again, if you are interested in practices of Orthodox Church, Eastern Catholics are basically former Orthodox Christians who accepted Catholic Church and kept their traditions intact… mostly. Just pointing this out in case you did not know. Eastern Catholics are in full communion with Catholic Church and the Pope, and every Catholic can go and attend their service and receive Eucharist there.