Metal vs Polymer: CZ 75 BD vs CZ P-09

Comparison review of the polymer CZ P09 and the metal framed CZ 75 BD. Both of these are hammer fired guns, both have decockers instead of manual safety levers and both are chambered in 9mm. There is now a newer version of the polymer one and it is called the CZ P-09 Nocturne. The CZ 75 has been in production for decades. Which would you choose for carry or home defense, etc.? Our full review of each is listed below.