Only one, only one, I dare not say how many are about here.. thought long and hard on this and I’m afraid to say it would be my Cotic Solaris. Always works, works everywhere, can ride miles on it, from ‘softer’ DH tracks to longer rides with lots of road. Could have been a Comencal, but though amazing in places, you wouldn’t want to ride a long way on one, could have been a LEVO SL but though very impressive, it just couldn’t be my only bike, last Bird was a great all rounder and terrific enduro bike but again couldn’t be the only one. I’m sure lots of other people have lots of alternatives as an only bike choice and I’m interested to hear about them.