The Z10 was my daily driver for two weeks under unusally heavy use, as I am a phone fanatic. My Z10 was from T-Mobile and came with latest firmware, so I never had the poor battery life that earlier adopters faced. I experienced about one random reboot a week, which I didn't consider a deal breaker, though I did take note.

There were no issues with connectivity, in fact, it was excellent. Far superior to the N9 in voice quality, wifi connectivity, data connection due to 4G LTE, and it dropped no calls (but neither does my N9 really).

Performance wise, the Z10 was very snappy and the mobile browser is the fastest I've used, though iOS is close. Sideloaded apps that I tried worked fine and had all features intact, like Netflix, Instagram, etc. Sometimes scrolling is slightly (slightly!) slower because they're Gingerbread apps, but the experience is not far off at all for the ported apps I tried. Tech media usually sensationalizes the 'absence' of these apps on the Z10 and the 'problem' of ported apps way too much given my experience. The app gap is more felt in advanced social media apps available on the majors, top games (I hear), and advanced utilities, like advanced browsers, etc. that may be delayed until BB10 gets the Android 4.1 compatibility update later this year.

One concern I had was that the Z10 can run very hot at times, usually when using the ported apps. Sometimes it seems to be a rogue process. Nobody wants a phone that may have heat-related longevity issues . . . Also, BB10 needs to add APIs that will allow apps to run in the background, it needs a swype-style keyboard option, and in-house programmers to put together a shyte-load of small tweaks unless they intend to open up the OS enough to allow others to tweak it (as they should).

App wise, Skype is a biggie for me, and now that it's around the corner, the Z10 may once again become my daily driver. The 4.1 Android update will be huge for the BB10 crowd, too, though that may not be part of the upcoming upgrade to BB 10.1. But some near-term enhancement to the Android compatibility is probably on the way, given the previewed Skype capabilities.