That black dial boutique model is drop-dead gorgeous. I enjoy several of these variations, but versions like the Boutique LE make me glad that JLC decided to experiment.
As I recall, the original A. LeCoultre in platinum was a polarizing design, and the Ti that followed was much better received. In fact, I have yet to encounter a single JLC fan who does not adore the Ti.
Concerning the rest, they offer different alternatives for those who admire the underlying horology but had reservations about the A. LeCoultre's idiosyncratic dial design. Exclusivity is assured for all examples.
Best,
Tim