I personally have had the small batch and single barrel and find them both really good. To me the small batch is woodier and the single barrel is a little sweeter. Again, being a single barrel - I'm sure other people's experiences have been different. I think the small batch at a $40 price point is a solid value.
I recently bought a bottle of the barrel proof but haven't opened it yet. I'm looking forward to tasting it against other BPs that I have which are Stagg Jr and ECBP. I've not ever found the Tornado (had it at a bar once) but I'm on a quest for it so hopefully one day - I'll get a bottle. I've not tried the rye as I'm hesitant to shell out $70 for a bottle of rye because it's usually not someting that I really like.