i installed a Gen 2 Elon Musk signature (its a sticker decal) in matte black charger. my reasons why i went with this specific Gen 2 was:
1) as mentioned it goes up to 80 amps. i have 56 amps going into my P100D Model X - which i like.
2) it has the 24 foot cable, which was a must in my garage due to size and arrangement of cars.
3) i don't know what the WIFI will do or does with the Gen 3 charger. all i need is for the X to charge via the charger as fast as possible.
the "larger" sized cable does not bother me what-so-ever with the Gen 2 and i purchased the tesla cable organizer for wrapping the cable up when not in use.