How 'bout displays? Both phones sport 4.3-inch screens. The HTC Sensation uses LCD technology, while the Galaxy uses Super AMOLED Plus. Each material offers its own set of advantages and drawbacks, and it's tough to label either as objectively superior. The HTC Sensation does have the higher resolution, however, at 540-by-960 pixels next to the Galaxy's 480-by-800.

The Sensation is slightly larger than the Galaxy S II and about an ounce heavier, too. It also has less on-board storage: The Sensation ships with 1GB of internal space, while the Galaxy S II will come with the option of either 16 or 32GB. And of the two phones, only the Galaxy S II will feature -- something that doesn't mean much now but may prove useful in the future.

One final point worth mentioning: Though the HTC Sensation and Samsung Galaxy S II both run on Gingerbread, the phones provide noticeably different software experiences. The Sensation comes with HTC's Sense user interface, whereas the Galaxy S II utilizes Samsung's TouchWiz UI. Which is better is purely a matter of personal preference; the best thing you can do is spend some time playing around with each setup to see how you feel. If you're like me and prefer an unmodified stock Android experience -- a "pure Google experience," as it's called -- you may want to look at a skin-free device like the upcoming instead.

The HTC Sensation 4G is set to launch sometime this summer on T-Mobile. No U.S. launch plans have been announced for the Galaxy S II thus far, but the phone is expected to arrive in the U.K. in early May -- so odds are, we'll be hearing something soon.

[More 4G comparisons: ]