Which one do you prefer?
Vacheron Constantin Traditionnelle Tourbillon 6000T/000P-B347 (2018, limited edition, 25 pcs)
Patek Philippe Perpetual Calendar Chronograph 5270G-015, Munich edition (2013, limited edition, 50 pcs)
A. Lange & Söhne 1815 Tourbillon handwerkunst 730.048F (2015, limited edition, 30 pcs)