I've been quite happy with my "first generation" tesla with the mobileye system. It has only tried to kill me a couple times in 6 years of driving it; it is not terribly smart but within the system's limits it is very stable. I certainly don't trust it to drive unattended, but it does offload 5-30% of the toil of driving on highways, which is pretty nice. Offloading 50-80% but constantly wondering "is it going to try to kill me?" I don't think would be as relaxing, though I understand lots of people have chosen to just not worry, which I guess is fine...
At the time I got the car I wasn't sure if I wanted the old "totally obsolete" AP1 or the "probably going to get way better (cough)" AP2; I'm glad I got the obsolete version....
I wonder if there are modern cars with systems comparable to the mobileye system from the original tesla setup.
Mobileye still sells to a large fraction of manufacturers (I think a plurality if not majority). You will still get variation in implementation, as Mobileye only does the sensing side, and the integration is done by the OEM.