I studied with a small ecclesia (group) for about a year. Very nice people who are very studious and take serious their personal relationship with God. Their general teachings make the most sense to me of any other Christian faith.
While their beliefs can vary depending on person to person, I believe most of them consider CT Russell to be the Faithful Slave, Laodicean Messenger, and Man with the Writers Inkhorn. Most also believe Christ had his parousia in 1874.
Like anything else, do your homework first. And, don't jump into anything. I would say stop attending JW meetings for a year, before getting involved in anything else.