Sometimes I wish I hadn't wasted my upgrade on the 920. I have a red 920 from AT&T. I was a big fan of WP7 where I purchased an LG Quantum on day one. I liked the "Fresh" OS so much that I jumped immediately to WP8 as soon as it became available. I chose the 920 because of Nokia's track record for updating/upgrading deficiencies. However, given the constant uphill struggle with battery life, and an even more troubling issue that happens whenever I try to end a call, I'd be lying if I said I wouldn't pass on the 920 for the new BB10 Z10. I left BB for WP7 because it had gotten stale, and the new Z10 appears to be enough to try and pull me back (if I hadn't wasted my upgrade).
Its exactly as fast, it has the same processor and GPU ( though the Nokia has a faster response rate on the screen by a factor of two or three)
I believe you do get these on all Windows Phones now, if I'm not mistaken, or you soon will.
Sorry to hear you had trouble, though I wouldn't make that statement about build quality so matter-of-factly, based upon your anecdotal evidence. Its unfortunate you were unhappy, but Nokia is still widely recognized as having the best build quality second only to Apple perhaps. HTC is one of the nicer Asian makes though, certainly much nicer than Samsung at least.
I would buy the Lumia 920 again. I was in Best Buy the other day playing with some of the phones and I still favor the 920. Honestly there is not much I don't like about this phone. If I was going to build the perfect phone it would be a Windows Phone with a larger screen, removable battery and expandable storage. I know people want more apps but I don't need a million apps, I just need about a dozen good ones.
I know people love their iPhones but the iPhone 5 is still too small for my taste. Thank goodness it was tethered because it slipped out of my hand in the store! The thing I like best about iPhone is they have all the best quality apps and accessories. The physical phone itself doesn't appeal to me. I find the metal band around the phone unattractive and the static rows of apps is uninspiring.
I like the HTC 8X but 16 GB of fixed storage is a deal breaker.
My runner up is the Samsung Galaxy Note II. Big screen, removable battery, fairly quick performance, decent app store make it a contender. Something that colors my perception is a previous frustrating experience with Android phones: app crashes, random shutdowns, weird quirks, etc. Windows Phone has been rock solid in comparison.