The Pantech Marauder, available only from Verizon, has a slide-out keyboard like the Stratosphere and Droid 4. Unlike some of the other lesser-known phones here, it supports LTE and runs Android 4.0 (Ice Cream Sandwich).
Pantech and Verizon market the Marauder as a "first smartphone" and perhaps it's good for that. It's cheap: $349.99 retail, and free with a two-year activation, but it's also clearly less of a phone than some of the alternatives. You might want to look at the Droid 4 — also on Verizon Wireless — carefully. For $99 more it's a much better phone.
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