The reason user picks the Sony Ericsson Xperia Arc because the design is fetching and the screen is larger and impressive. First thing which will appeal to the user are its high resolution display which makes icons and web text appear sharp and readable. Display does quite good under sunlight too. The camera is excellent. Sony Ericsson's Exmor R sensor produces some fine shots in good light, backed up by a decent flash for low light situations and there is autofocus while recording movie clips, too. The hardware is also extremely impressive, both in terms of looks and performance.
However there are few issues too in number of areas like large screen and thin bezel means the three buttons are very close to the bottom edge, making it feel a little top heavy in the hand. Also, the thin case requires thin buttons user will find himself searching for the power and volume buttons every time, instead of instinctively getting them.
The Xperia Arc is a decent all-round phone. The camera, looks, battery life, and the performance of the Sony Ericsson Xperia Arc are its major plus points. For the general users out there, the Sony Ericsson Xperia Arc is more than enough. They will be highly satisfied with it. It comes with relatively friendlier price. So both price and performance are decent combinations for users. But it would have been nice if Sony Ericsson Xperia Arc had manufactured the Arc with a bit less plastic.