i almost bought a famag 10 from PHG earlier this year, but they were having stock issues due to covid. phew.
yes, from what i've seen, the breaker bar is pretty important. i wouldn't buy a spiral that doesn't have a breaker bar.
but then again, i'm pretty handy, so maybe i would. i bet i could add a breaker bar onto most spiral mixers.
also worth a read: https://wheatbeat.com/famag-spiral-mixer-update/