Thank you for the well-composed essay, Rudy.
Ironically, I heard the same sentiments, almost word-for-word, from 04-05 Mercedes owners (all selling!) when I was shopping for my X5 last December. Who makes MBenz's again?
The industry is changing. Tech is becoming the backbone of cars, and BMW does have some quirks there to address. However, as Dinan said, the solidity, ride, and handling are incredible, and simply outdo other models on the road. In coming years, top honors (& solid sales) will belong to the company that can deliver tech, power & handling, not just one. That competition will only make future BMWs even better, IMHO.

PS- You did have a 1st-year X5, which has been aknowledged to have more problems that subsequent years. Not an excuse, but I'd always look twice at buying a first-run model, from any company.
Best of luck with your future cars- I hope you'll stay in touch about what you choose & how it pans out.
M