Preowned Holy Grail?

I’ve begun researching toward a purchase of a preowned iX in the next few months. I know there are deals but I don’t want to lease a new one. Targeting a 50 for the longer range, lower price, and smaller wheels (comfort) but wouldn’t say no to a killer M deal.

Comparing the ‘23 and ‘24 model years, seems like the biggest difference is:

23 has air suspension and IAS 24 has iDrive 8.5 for enhanced handsfree driving

I live in Chicago and the streets are awful, so the air suspension is a big plus. However, I also highway drive every day and am coming from a Tesla, so the enhanced hands free driving is also a big plus.

I’ve read that models manufactured after March 2023 get iDrive 8.5 - does this include any ‘23’s? So there would be a limited pool of used 23’s that have air suspension and iDrive 8.5? Or is my only viable option for getting both to get a ‘24 M? Thanks!

Edit: Appreciate all the discussion, but is anyone able to provide feedback on my main concern: Does a ‘23 model exist with both iDrive 8.5 and Air Suspension? TIA.