Well I figured I would chime in......as I have decided to sit in a nice unnoticable area today at my CA (feels good to rebel at such a 'important' spiritual feast!)
Anywho..... this is what I have found in visiting my hubby's church and others when I visited my non-JW dad as a child.
Free will and the belief that a persons relationship with God is personal is discerned in many other denominations. Sure they will give sermons and present Bible Study discussions on Xian living but it is up to the individual free of church-judicial interuption to choose that path.
Thus finding another 'group' becomes about either agreed thinking on doctrinal matters or social structure that is beneficial to your spiritual/communal needs at the time.
My husband originally chose his faith based on popularity social structure but now one of his childhood dominations has expanded their ministries in comparison he has been deeply contemplating switching as it's congregational autonomy is more in line with his doctrinal interpretations.
Each week for kicks do beliefnet's belief-o-matic and find the results ridiculous some weeks and interesting the next....