My favourite 'apostate'? - definitely Paul Grundy of jwfacts.com. When I first saw his website, I clicked on it assuming it was pro-JW. I was in for a bit of a surprise! At first, I actually felt a bit of anger towards him, but I couldn't argue with the content because he used WTS publications as support. In the end, I agreed with most of what he said, only having one or two minor disagreements. Pauls seems to put his uni education to good use by good presentation of data and evaluation of different comments and viewpoints.
After discovering jwfacts.com, I found freeminds and this site. Some of my other favourite people - snare & racket, cofty, blondie, outlaw, rubadub, simon, and others I can't quite remember right now.