I have six, with another one on the way although that will mean selling one of the current six (Anthem). I use them all although its my Soda that gets used most if you take out the commuting side of things as that gets used 4 days a week at the moment.
I could get rid of the soul and use the Soda for off road commutes but I like the option and also have it built quite differently.
Santa Criz Blur LT - DH, more extreme rides and places like Golspie and Laggan black
Giant Anthem x1 - About to be sold but was my bike for events
Cotic Soda - Long XC and trail centre rides
Cotic Soul - Play ht and off road commutes
Trek Madone 4.9 - Sportives and long road rides
Kona Bandwagon - Road commutes
Just purchased an Anthem X1 Advanced 29er to replace my old Anthem X1, will be used for racing events and occasional XC rides.
My partner has 5 bikes (Blur, Lynskey, Condor Fixie, Ridley road and Orange R8, my son 2 (Bfe and BMX) and my daughter one (Isla bikes). Its quite a busy and well alarmed garage.