It all works well, and we like the fact that each source has its own customized UI that looks custom-suited to the service it's for (the iPod player, for example, apes iTunes).

ENGADGET: Chumby One review Hands-on

Rather than fill the device with bloatware apps or overlay a custom UI, Sprint's installed a software button that takes you to a store exclusively designed for Sprint's new Android devices.

ENGADGET: Sprint guns for mid-range Android: $149 Samsung Transform, $99 Sanyo Zio, and $49 LG Optimus S include 'Sprint ID'

In addition, the phone comes with Meizu's unique Flyme OS, which features a custom designed UI, as well as cloud services such as data syncing, music store (China-only), and an applications market.

ENGADGET: Dual-core Meizu MX fully unveiled, launching on January 1st with HSPA+

ZDNet's Mary Jo Foley says her best understanding of "Pink" is now that it's a Microsoft-branded phone running a custom UI on top of Windows Mobile 7, developed by what's left of the Danger team and targeted at the Sidekick market.

ENGADGET: Microsoft's "Pink" smartphone to be Microsoft-branded?