it's difficult for me to pick a 'favorite' (if one has more than child, which one is the 'favorite'),
but in terms of uniqueness (the most unTaylor-like Taylor, tone-wise), i'd have to say this one -
814LTD Custom Shop redwood/ziricote
as far as i know, i haven't seen another in this wood combination &
if aother were to be made, the specs would be a good bit different
(among them wood thicknessing, bracing, finish & headstock joint) -
if there was ever a Taylor that was leaning towards a 'thick' gibsonesque
type of tone while maintaining Taylor's definition, for me it's this one 
Michael, this is my dream wood combination. Ever since I played the Grey Whale GC I have wanted a Ziricote guitar. When they had the first Taylor Stock people were getting into the redwood tops. At that point I knew the two were meant to be together. I am glad you have this guitar. It is nice to know that it does exist somewhere. I am sure it was worth the wait.
For my own Taylor guitars, I started with the best of the standard production models, a 1998 714-CE. There wasn't much room for improvement after that, so I have only had a few others. Next was a Big Baby that I traveled around with, took to the beach and to camp. I picked up a 30th Anniversary 410-CE, then a GS7-E and finally a GA3-E. As of now, I only have the 714-CE and the GA3-E. After ten years the Big Baby was ready to move on. The 410 and GS7 both sounded great, but I never could get comfortable with the body shapes and heavier strings. I tried lights on both of them, but it just wasn't a match. So I am probably done buying Taylor guitars. Sad, but I have my needs and desires met. Unless Michael decides to turn loose of that GA Ziricote/Redwood!
