Standard smartphone under 300$

[Darkness98]

I am planning on getting a smartphone with the following specs-
♠Dual sim.
♠HD display and recording
♠High speed 3G
♠Standard battery life (in 3G and vibrate mode)
♠and lastly a personal preference- The ends of the phone must NOT be curved like most of the models of samsung.

Brand must be standard.

I have selected this model temporarily. So I want reviews of it.

LENOVO P780

 

[cars12345]

Some ideas:
-Sony Xperia tipo dual
-HTC Desire V
-Acer Liquid Gallant Duo