I have reasoned with Jehova witnesses several times. We don't always agree, but the thing I like about them when compared to many from other religions, is that they study the bible, they don't just go to church. There probably are Jehovah witnesses that just go to church, but I guess those ones aren't the ones who are likely to come to reason.
One thing that doesn't sit right with I is that many I have talked to are ruled too much by their church rulers. This ties in to their view of the last prophets.
For example, sometimes if I reason of something that they haven't read about in the literature of their rulers, they are not willing to check their own spirit and reason about it. They will tell I instead that they need to "check their literature". They want to see what they are supposed to think about the subject.
Haile Selassie I