The BMW iX is going to be worth almost nothing few years down the line while the Tesla will retain a large amount of its original price.It's that ready availability that's a big issue for Tesla. You have to *really* want one now. We've been considering getting a new car for a while and I've been looking at different options. While I'd consider a Tesla Model X, the delivery time was saying something like mid 2023. I'm willing to wait a few months for a car but not a year and a half, sorry. Not when I could get a BMW iX within a few months that's better in every way.
I would wait for the Tesla.