The iPhone 4S has an , but it also has the smallest screen of the bunch at 3.5 inches diagonally. The Titan 2, Galaxy Nexus, and One X all sport 4.7-inch screens. The Lumia 900 splits the difference here, leaning toward a larger screen at 4.3 inches.

The biggest discrepancy is in the cameras. Samsung decided to go cheap here--something PCWorld's review team --taking away from a generally solid device with a flat, 5MP camera. The Titan 2, on the other hand, features an impressive 16MP camera which my PCWorld colleague Ginny Mies called . The Lumia 900, iPhone 4S, and One X all have 8MP cameras, but only the iPhone 4S and the One X can record video in 1080p resolution.

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