T-Mobile announced yesterday the prices and availability of two Android superphones that many folks have been looking forward to: the HTC Amaze 4G (formerly known as the HTC Ruby) and the Samsung Galaxy S II (which was codenamed the Samsung Hercules).

Both devices will be available for preorder on T-Mobile’s online store (www.T-Mobile.com) starting on October 10. Units will become available in T-Mobile retail stores and partner establishments starting on October 12.

The HTC Amaze 4G costs US$260 with 2-year contract and after US$50 rebate. The Samsung Galaxy S II, on the other hand, costs US$230 under the same terms.

The HTC Amaze 4G boasts of the following specs:

• 1.5-GHz dual-core Qualcomm Snapdragon processor
• Android 2.3.4 Gingerbread with HTC Sense
• 4.3-inch qHD touchscreen display
• 8-megapixel primary camera (1080p HD video capture)
• Physical camera shutter button
• Near Field Communication (NFC)

Meanwhile, the Samsung Galaxy S II variant for T-Mobile comes with a bigger screen than the global version of the Galaxy S II. T-Mobile’s variant has a 4.52-inch touchscreen, which, in fact, makes it the smartphone with the largest screen on T-Mobile. Just like the other Galaxy S II variants, T-Mobile’s variant has Super AMOLED Plus technology for vivid and crisp display. T-Mobile’s Samsung Galaxy S II variant boasts of the following specs:

• 1.5-GHz dual-core Qualcomm Snapdragon processor
• Android 2.3.5 Gingerbread
• 4.52-inch Super AMOLED Plus touchscreen
• Near Field Communication
• DLNA support
• HDMI support

Looks like T-Mobile has two more Android superphones with magnetic appeal trying to attract you for the holidays. Which of these powerful beasts do you want to take home as your new pet?