I dont even know what ID7 and ID8 are...
E34, E39, E46 are the sweet spot for BWMs...if you want tech, install a apple car play/android radio. They have ABS, airbags, traction control, xonons (ok, not on the E34, but easily retrofitted) what more do you need?
I dont want a seatbelt beeper, I dont want lane keep assist, I dont want pretensioned seatbelts or seat occupant sensors. I dont want driver monitoring systems and electric this and electric that. I want leather, quality interiors, well engineered suspension, unstressed "large" capacity motors, comfortable seats and an engaged driving experience.
Personally, E28 is just a bit too old school for me to be daily useable, but that isnt the role those cars play anymore